This Patch Release contains important fixes as well as some updates for the 2025 Season 4 Release.

• Fixed a recent and prevalent issue where framerate significantly drops after racing for some length of time.

• Slightly improved the precision used for verifying missed checkpoints and course cut black flags.

• AI Drivers have improved their racing skills at Circuit des 24 Heures du Mans.

• Fixed an issue where the RPM on nearby opponent cars could appear to sound substantially too high.

• Improved the performance and functionality of the Skew (S) meter.

• Corrected some bindings for Best Times and Delta Times.

• Add a subtle background to the Player’s entry for Relative Brake Bias.

• Fixed an issue in Settings where the FOV calculator would not accept text inputs.

• Fixed an issue where the Custom Sector box was not showing +/- time correctly.

• For the Camera Tool, fixed a crash-to-desktop error with the context menu.

• Updated to the latest Simucube API.

• Brake bias adjustments are now allowed in Fixed Setup events.

• During pit stop repairs, all vehicle damage may now be fully repaired.

• Improved windshield wiper animations and visual effects.

• Brake bias adjustments are now allowed in Fixed Setup events.

• Brake bias adjustments are now allowed in Fixed Setup events.

• During pit stop repairs, all vehicle damage may now be fully repaired.

• During pit stop repairs, all vehicle damage may now be fully repaired.

• Brake bias adjustments are now allowed in Fixed Setup events.

• During pit stop repairs, all vehicle damage may now be fully repaired.

• Brake bias adjustments are now allowed in Fixed Setup events.

This Hotfix Release contains critical fixes as well as some updates for the 2025 Season 4 Patch 3 Release.

• Fixed an issue where tire options were available for team members that were not available for the crew chief or driver.

• Fixed a critical issue where this car would fail to load into Sessions.

This Patch Release contains important updates as well as fixes for issues with the 2025 Season 4 Release.

• During this maintenance period, there will be intermittent connectivity to the Demo Drive launching/setup service for roughly the first 30 minutes of downtime. Customers who enter a Demo Drive Session during this period will be unaffected by the ongoing work. After the Demo Drive work is complete, and our patch deployment process continues as normal, Demo Drive will be fully functional again as usual.

• Since Demo Drive will not be fully available during this maintenance period, Demo Drive will be left up for 24 hours once maintenance is complete.

• Track splines are now aware of their relative altitude and may factor this parameter into predictive and estimated calculations related to car types for things such as estimated laptimes, race control gained time yield behavior, penalty balance, and more. This will improve timing functionality not only at a high altitude track, like Mexico, but will also improve a track that has significant altitude variation throughout its run, like Mount Washington.

• Parameters for vehicle turbo and boost have been adjusted to correspond better with the latest updates for realistic engine operation at altitudes. These changes impact the following vehicles:

  • <Car Class> GT3

  • <Car Class> GT4

  • <Car Class> GTE

  • <Car Class> Touring Cars (TCR)

• Fixed an issue where black flags were given for course cuts that were not committed.

• AI Drivers have improved their racing skills with the GT4 and GTP class cars to coincide with the  hybrid system updates.

• AI Drivers have improved their racing line through the Le Mans chicane at Daytona International Speedway.

• Fixed an issue where AI drivers could not properly navigate the rolling start from pit exit at the Charlotte Motor Speedway (Roval) configurations.

• Fixed a crash that was occurring due to bad sorting in the Results tab.

• Fixed an issue where chat macros with '$' appended to them would not trigger.

• Fixed an issue where "~" would not open text chat on the Session Screen.

• Fixed an issue where the Last Sector Report would always show the delta from the best lap.

• Fixed an issue where the interface would not render on screens with over 8K resolution while HDR was active.

• Fixed an issue where multiple laps could be flagged as your fastest lap. There can be only one.

• Fixed an issue where locking UI positions with the mouse could cause the cursor to persist on the screen.

• Fixed an issue where Teams and Drivers could get out of sync when sorting in the Entries tab.

• Fixed a crash issue that could occur when there are Teams in the session and viewing the Entries List.

• Fixed a bright flash that could occur between Sessions when viewing the Laps tab.

• Fixed an issue where the Drive-By-Mouse control interface was not appearing when using any shift aids other than auto shift.

• For the Options Screen, key-bindings now briefly flash on keypress.

• Improved the rendering performance of the S Meter.

• Updated the Results widget on the Session Screen.

• Fixed bug where certain Admin commands were disabled for drivers when they were out of their car.

• Fixed an issue where Garage Notes were not being saved correctly.

• Fuel economy has been adjusted.

• For cars using the new hybrid system, adjusted wheel installs to improve water clearing for rear tires and improve the wet weather balance of performance within the class.

• Power Balance of Performance may now be applied to these cars via the Garage once again.

• Fixed an issue where some in-car controls were incorrectly adjustable by Crew Chief and Spotter teammates.

• iRacing setups have been updated.

• iRacing setups have been updated.

• Fixed a texture issue with some wheel rims.

• Fixed an issue where the material properties for the nose and rear hulls were incorrect which could cause strange visual and particle effects during collisions.

• Ambient occlusion mapping has been updated.

• Mid-Season BoP Update: Aerodynamic drag has been increased slightly. 

• Improved the engine, backfire, gear, transmission, and ignition sounds, as well as the overall sound dynamics of the audio.

• Fixed an issue with remote cars displaying the incorrect tire compound.

• Ambient occlusion mapping for body damage has been updated.

• Ambient occlusion mapping has been updated.

• Fixed an issue where some in-car controls were incorrectly adjustable by Crew Chief and Spotter teammates.

• Removed the excessive halo glow from the blue steering wheel shift lamp.

• Reduced the ease and frequency with which the rear wing can be broken off the car from rear-end damage.

• The hybrid system's cornering mode has been implemented.

  • This system will allow the driver to adjust the amount of front hybrid drive they will see in high speed corners, giving them the ability to fine-tune high speed balance.

• Ride heights related to tires have been updated.

• Fixed an issue where the steering wheel shaft was not rotating correctly if the steering wheel display was disabled.

• SDK/External device-based shift lights should now function as expected with this car.

• Fixed an issue where some in-car controls were incorrectly adjustable by Crew Chief and Spotter teammates.

• Ambient occlusion mapping has been updated.

• Engine braking behavior has been restored to a previous version.

• iRacing setups have been updated.

• Fixed an issue where some in-car controls were incorrectly adjustable by Crew Chief and Spotter teammates.

• Mid-Season BoP Update: High-speed drag has been reduced slightly.

• iRacing setups have been updated.

• iRacing setups have been updated.

• (Oval) - Fixed an issue where Cautions were not operating correctly.

• Adjusted distant 3D buildings to only display during Replay mode to help with graphics performance.

• Some floating tire barriers have been grounded.

• Some track-side objects have been adjusted to slightly improve graphics performance.

• Fixed an issue where the pit speed limit would vanish after entering the pits. You are allowed to know the pit speed limit while in the pits.

• Grammar and spelling on some signs and advertisements has been fixed. This will be the site for the AI Driver's Annual Autumn Spelling Bee, so, everything had to be correct.

• (Oval) - Fixed an issue where Cautions were not operating correctly.

• Fixed an issue where the pit speed limit would vanish after entering the pits. You are allowed to know the pit speed limit while in the pits.

• Improved the blending of track surface decals with grass textures.

This Patch contains some updates and fixes for the 2025 Season 4 Release.

You can find the Release Notes for this Patch below, or on the iRacing Forums here: 2025 Season 4 Patch 2 Release Notes \[2025.09.24.01] — iRacing Forums[forums.iracing.com]

• The Dallara IL15 is now enabled for AI racing.

• Added the latest Italian spotter pack.

• Fixed an issue with AMD FSR where the viewport was not being calculated correctly.

  • NOTE - While this issue is fixed for non-VR, AMD FSR still is not functioning correctly in VR.

• For AMD FSR, the new UI is now centered and interacts properly with the mouse when FSR is enabled.

• Fixed some issues with eye tracking for Pimax.

• Updated correction for engine power that will bring power unit outputs more in line with reality at high altitude tracks like Mexico City.

• Fixed a crash that was occurring when switching from a Practice server to a Race server.

• Fixed an issue where spotting in practice sessions would cause overlapping unreadable buttons to appear in the Session Screen.

• Fixed the sliders in the Camera Tool to now behave properly when typing values outside of the minimum and maximum constraints, or entering a blank string.

• Added expand/collapse functionality.

• Fixed an issue where the wind direction arrow was facing the incorrect direction.

• Fixed an issue with QuickChat not saving properly.

• The Garage > 'My Setups' file dialog and Camera file dialog now correctly show the contents of directories when a user has characters outside of their default locale in their file path.

• Removed the word "Sector" from the Splits display to make it more compact.

• Fixed an issue where the horizontal scroll for the Results tab would not always appear at the bottom of the window.

• Fixed the Tire Options black box navigation for the Porsche Mission R. This fix applies to any car with changeable tires but non-adjustable tire pressures.

• Fixed an issue where the Lap Timing black box included a blank rectangle next to the title.

• Increased the contrast of the gradient behind the steering wheel icon.

• Fixed an issue where the 'Configure Now' option would not return users to the calibration wizard.

• Fixed a crash that was occurring for users in specific Time Zones with specific Regional Formats.

• Fixed an issue where the Entries tab was sorting Divisions by their first digit.

• Fixed the dropdown values when exporting Garage setups.

• For heat races, fixed an issue where the left and right columns in the Event Rules were not aligned.

• Increased the resolution on the steering lock range slider.

• Fixed an issue where car numbers in the Results tab were not always aligned.

• Added an Official/Unofficial flag state next to certain sessions.

• Fixed an issue with text being cut off in the chat box.

• Fixed the camera timer overlay so it matches the legacy UI behavior.

• Fixed an issue where the Shift Horizon setting had values of -0 and +0.

• Fixed an issue where setups would reset if they had special requirements for fields that would limit options.

• Added some missing spotter options to the Settings.

• Fixed an issue where certain cars had painted tires, windshields, and windows when using specific paints and car patterns.

• Adjusted the hybrid code to ensure that every GTP and the Ferrari 499P have equivalent hybrid-assisted fuel economy.

• Fixed an issue where the Autofuel keybinds and Fuel To End toggle were not working correctly.

• Fixed an issue where the steering wheel dash did not display the TC1 and TC2 values in the appropriate places.

• Fixed an issue with the rain light.

• Fixed an issue where camber would not be highlighted when causing the tech inspection to fail.

• Increased the engine torque.

• iRacing setups have been updated.

• Aligned the shift lights on the digital dash.

• Renamed TC1 and TC2 to TCLON and TCLAT in order to match the in-car dash display.

• Fixed an issue where the TC1 and TC2 in-car controls did not map correctly to the TC1 and TC2 settings.

• Fixed an issue where the Autofuel keybinds and Fuel To End toggle were not working correctly.

• Fixed an issue where the TC1 and TC2 in-car controls did not map correctly to the TC-A and TC-B settings. TC-A is also correctly labelled in the black boxes and garage now.

• Raised the yield and break limits for wheels.

• Increased the meatball flag threshold for wheel damage and improved the pace of wheel repairs.

• NOTE - Terminal wheel damage is still possible.

• Fixed an issue where the TC1 and TC2 in-car controls did not map correctly to the TC1 and TC2 settings.

• Fixed an issue where the windshield wiper controls were not highlighted in the Options menu.

• Slightly reduced the front rebound damping. iRacing setups have been updated.

• iRacing setups have been updated.

• The selected deploy mode should now be accurately reflected by the steering wheel dash and dials.

• Recharge mode can now be bound to an in-car control: Regen Gain.

• Relocked the engine braking dial to a max of 12 positions.

• The selected deploy mode should now be accurately reflected by the steering wheel dash and dials.

• Recharge mode can now be bound to an in-car control: Regen Gain.

• Renamed TC1 and TC2 to TCLO and TCLA in order to match the in-car dash display.

• Fixed an issue where the TC1 and TC2 in-car controls did not map correctly to the TC1 and TC2 settings.

• Fixed an issue with the power audio.

• Fixed an issue with the In-Car Adjustments black box not functioning correctly.

• Fixed an issue where the dashboard G meters and ABS lights were stuck at 50%.

• Fixed an issue where the car could fail tech without displaying why.

• Fixed an issue with floating fuel lids appearing in the cockpit view.

• Added a temporary renderer.ini setting to help resolve an issue where lower shader quality settings showed white paint around the stadium.

• Added LODs to the scissor lift object.

• Fixed an issue where the stadium section of the track was missing textures at Medium/Low shader settings.

• Adjusted the instanced powerlines.

• Updated several adverts around the track.

• Added wraps to the weaved tire bundles.

This Patch contains some updates and fixes for the 2025 Season 4 Release.

You can find the Release Notes for this Patch below, or on the iRacing Forums here:

https://forums.iracing.com/discussion/85557/2025-season-4-patch-1-release-notes-2025-09-12-01

• GENERAL:

  • Fixed an issue where some values had excessive decimal precision.

  • Fixed an issue where spin controls were lacking feedback when selected.

  • Fixed stutter when race flags are shown for the first time.

  • Added VR screen space controls to the Options menu.

  • Fixed a FOV calculator bug that mixed up imperial/metric units, causing the FOV to come out wrong.

• SESSION SCREEN:

  • Added a gradient behind the steering wheel in the Session Screen to improve contrast.

  • Fixed an issue where multiple items in the top bar of the Session Screen were not center-aligned.

  • Fixed an issue where the driver select dropdown would not update when new drivers entered the session.

  • Fixed an issue with the radar not keeping a square aspect ratio.

• DRIVE SCREEN:

  • In the F1 box, moved the real-time clock from the header space to the bottom row, and added a Sim-time clock alongside it.

  • The F2 and F3 boxes have been adjusted to no longer require a scrollbar.

  • Fixed an issue with the positioning of black box controls after moving them and then transitioning to another screen, or closing the Sim.

  • Larger size options have been added for Virtual Mirror and the Delta Bar.

  • Fixed an issue where all black boxes would grow larger when a car had a large car-specific black box.

  • Fixed an issue with some elements clipping with a narrower top bar and the focus driver element.

  • The tire change feedback icon is now hidden when not in a Race Session.

  • UI layer settings for a few widgets have been adjusted to ensure layering priority for: Pit Speed, Pit Info, Pacing, Flags, and Penalties.

  • To help make the drive screen UI and text larger and more readable, we adjusted the Drive Screen to allow UI scaling past where the Session Screen will stop applying it.

  • Improved the spacing between the driver names and the AI helmets in the Results and Entries tabs.

• GARAGE SCREEN:

  • Fixed an issue where the garage canvas could overlap the bottom bar.

  • The Tech Inspection spinner is now appropriately centered.

• OPTIONS SCREEN:

  • Dropdowns that have many options now correctly show a scroll bar at all times.

  • Options Screen scaling within split layouts have been improved.

  • Updated tooltips for the Controls section of the Options screen.

  • Fixed the label for the Shift Aid option.

  • Removed some extra borders from items in the Controller Configuration Wizard screens.

  • Fixed an issue where sound cards could disappear from the Options screen if they had a unicode character in their name.

• BROADCAST MODE:

  • Added the split mode/broadcast UI.

• Raised the collision and damage thresholds for Dirt Road cars making contact with the environment. This allows for a bit more aggressive driving before receiving an incident from a wall or bump collision.

• Fixed an issue where driver names that display on vehicles would incorrectly appear as uppercase, or not appear at all, when reloading the car paint via the CTRL+R command.

• Fixed some audio level and mixing issues with the updated hybrid systems for all applicable cars.

• Hybrid motor audio has been tuned.

• A setting has been added to the “app.ini” file that allows users to display sound levels in dB units or a generic slider.

  • 'soundUiControlsInDb=1' displays the level sliders in dB.

  • 'soundUiControlsInDb=0'  displays the level sliders in a range from 0-100.

• Improved the auto-detection of Fanatec wheels.

• For GTPs that feature the hybrid system, fixed an issue with the deployment cutting unexpectedly after a few laps.

• For the new hybrid system, added an atmospheric condition correction to the allowable halfshaft power.

• iRacing setups have been updated.

• Fixed an issue where the rainlight would not properly disfigure with rear-end damage.

• iRacing setups have been updated.

• Onboard engine sounds have been improved.

• Updated the rev limiter type to be consistent with other GTP cars in the class.

• iRacing setups have been updated.

• iRacing setups have been updated.

• iRacing setups have been updated.

• Strengthened the rear spoiler.

• iRacing setups have been updated.

• iRacing setups have been updated.

• Fixed a crash that was occurring with the iRacing lemans_fixed setup.

• Adjusted the pit limiter to now be available in all gears.

• Fixed an issue with the decrement bind on the TC2 setting.

• iRacing setups have been updated.

• (ALL) - iRacing setups have been updated.

• Fixed an issue where the Battery SoC value was not displaying correctly in the In-Car Adjustments black box.

• For the new hybrid system, added an independent setting that overrides the selected deploy mode. This can be activated in fixed setups.

• For the new hybrid system, improved attack mode to be more aggressive with deployment but with greater battery drawdown. This improves its use as an overtaking tool but will hurt SoC management overall.

• Increased the maximum-achievable turbo boost to improve engine performance at high altitude tracks.

• iRacing setups have been updated.

• Fixed an issue where the Battery SoC value was not displaying correctly in the In-Car Adjustments black box.

• For the new hybrid system, added an independent setting for recharge mode that overrides the selected deploy mode. This can be activated in fixed setups.

• For the new hybrid system, improved attack mode to be more aggressive with deployment but with greater battery drawdown. This improves its use as an overtaking tool but will hurt SoC management overall.

• Added further adjustments to engine braking to improve braking stability.

• iRacing setups have been updated.

• Gauge lightmap has been updated.

• TS and ESC switches are now mappable to the TC1 and TC2 in-car controls respectively.

• iRacing setups have been updated.

• iRacing setups have been updated.

• Fixed an ad on the right-side wall near the start of the pit entry lane.

• The slowdown penalty at Turn 2 has been increased.

• A variety of config-specific fencing has been updated.

• Distant buildings textures have been updated.

• (Oval) - Moved the restart zone cones into the grass.

• Some terrain seams have been patched.

• Some terrain seams have been patched.

• Some terrain seams have been patched.

• (Road Course) - Moved the anti-cut pyramid curbs in the LeMans chicane closer to the sawtooth curbs.

• Some terrain seams have been patched.

• Some terrain seams have been patched.

• Some terrain seams have been patched.

• Some terrain seams have been patched.

• Some terrain seams have been patched.

• Some terrain seams have been patched.

• Some terrain seams have been patched.

• Some terrain seams have been patched.

• Adjusted the visual popping distances on some tire bundles.

• Flagstand numbers have been added.

• Terrain texture has been updated.

• pit wall textures have been updated.

• Some terrain seams have been patched.

• All missing UI images have been added.

• (Indycar 2012-2018) - Adjusted the cones and walls around the hairpin.

• A variety of visual and physical touch-ups have been completed at this track, including:

  • A variety of floating objects have been tethered appropriately.

  • Objects around the drag strip are now solid.

  • Outer fences have been adjusted.

  • Weekend crowds around the mini golf course area have been touched-up.

  • Parasol and umbrella placements have been optimized for perfect picnicking.

  • The tunnel area has been updated.

• Some terrain seams have been patched.

• Levitating track marshals have been grounded. They do not need to practice that behavior at work.

--------------------------------------------------------------

The iRacing 2025 Season 4 Release Build has passed tech inspection and is ready to roll! This release introduces new content, features, improvements, and fixes for 2025 Season 4, which officially starts on September 16th at 0000 UTC!

“#soon” has arrived, and the new Sim UI is finally here! Rebuilt from the ground up, the new Sim UI utilizes modern technology, tools, and design principles to power an advanced new UI framework and in-sim experience. The new Sim UI should appear familiar in form to long-time users, with select new capabilities and functionality. This powerful new technology paves the way for significant future innovation and all-new sim experiences and features.

The iRacing vehicle garage expands with three new bays for three brand-new cars: the Aston Martin Vantage GT3 EVO, the Dallara IL-15 (INDY NXT), and the Ford Mustang GT4! The entire GT4 Class of cars has received a multifaceted performance, tires, and physics overhaul. The hybrid system for vehicles has been updated for improved realism. The drafting parameters for the NASCAR Gen4 cars have undergone extensive adjustments to optimize the racing experience. And the BMW M4 GT3 has been updated to the EVO spec with new physics and art.

The iRacing world map adds the legendary track, Autódromo Hermanos Rodríguez, direct from Mexico City. Sonoma Raceway, World Wide Technology Raceway, Charlotte Motor Speedway, and North Wilkesboro Speedway have each been re-scanned and remodeled. Six additional tracks have been overhauled with all-new artwork, including five on the NASCAR schedule and Oulton Park Circuit.

¡Saluda a España! iRacing introduces localization for many parts of the iRacing application. Customers may now select to use iRacing in European Spanish. We are still working on translation technology for some areas of the iRacing application, the Sim itself, and additional languages will also be coming in the near future.

All three new cars come fully equipped and ready for rain racing (Aston Martin Vantage GT3 EVO, Dallara IL-15, Ford Mustang GT4)! AI Drivers are ready for competition with FIVE new cars (Aston Martin Vantage GT3 EVO, Dallara IL-15, Ford Mustang GT4, and the NASCAR Gen4 Class Cars)! And, AI Drivers have already mastered North Wilkesboro Speedway - Oval and all seven track configurations for the brand new Autódromo Hermanos Rodríguez (Mexico City)!

Season highlights include:

• New Sim UI

• Aston Martin Vantage GT3 EVO

• Dallara IL-15 (INDY NXT)

• Ford Mustang GT4

• Physics Overhaul for the GT4 Class, including Rain Tires updates

• BMW M4 GT3 updated to EVO spec

• Hybrid System Overhaul

• Substantial NASCAR Gen4 Drafting Updates

• Autódromo Hermanos Rodríguez (Mexico City)

• Rescanned and remodeled tracks: Charlotte Motor Speedway,  North Wilkesboro Speedway, Sonoma Raceway, and World Wide Technology Raceway.

• Overhauled and modernized tracks: Chicago Street Course, Circuit of the Americas, Daytona International Speedway, Texas Motor Speedway, Watkins Glen International, and Oulton Park Circuit

• Texture Compression Update

• VR Headset Eye-Tracking Foveated Rendering Support

• European Spanish for much of the non-in-Sim iRacing application

• All three new cars come ready for rain racing! (Aston Martin Vantage GT3 EVO, Dallara IL-15, Ford Mustang GT4)

• AI Racing is now available with FOUR new cars! (Aston Martin Vantage GT3 EVO, Ford Mustang GT4, and the NASCAR Gen4 Class Cars)

• AI Racing is now available at North Wilkesboro Speedway, Circuit of the Americas - NASCAR West, and all SEVEN track configurations for the brand new Autódromo Hermanos Rodríguez (Mexico City)! AI Drivers have also been retrained from scratch at Charlotte Motor Speedway - all EIGHT non-Dirt configs, Sonoma Raceway - all NINE non-Dirt configs, and World Wide Technology Raceway (Gateway) - Oval.

• Hundreds of meticulously engineered new vehicle setups

Visit our 2025 Season 4 features page here:

https://www.iracing.com/seasons/2025-s4/

Full 2025 Season 4 Release details are below.

--------------------------------------------------------------

• Customers may now select to use iRacing in European Spanish!

  • This translates much of the non-in-Sim iRacing application. For more information about what this includes, does not include, and if you are a native speaker, how you can help us improve our work here:

https://forums.iracing.com/discussion/84408/european-spanish-localization-feedback#latest

• Randomly generated AI Opponent Rosters have been further improved with more than 300 new color combinations, specialization by car and class type, and the addition of new sponsors.

• The country of Netherlands Antilles has been removed from the selectable list. This country was dissolved in 2010.

• The country of Swaziland has been appropriately renamed to Eswatini.

• Tons of new sponsors have been added to the Paint Kit, including:

  • iRacing Downshift, iRacing Studios, Advance Auto Parts, Advent Health, Alcon, Ally, Anduril, Ansys, BBS, Big Fish BBQ, Borla, Callies, Castrol, Cometic, Cosworth, CW Sports, Dart, Fifth Third, Five Star Bodies, FOD Control, Horizon Hobby, HTL Technologies, Hyperco, Intercomp, Jack Links, JBL, JE Pistons, Jostens, JRi Shocks, Klotz Synthetics, Kooks, Liquid Death, Loose is Fast Podcast, Losi RC Cars, Mack Trucks, Quarter Master, Racing Electronics, Safety Kleen, Schluter Systems, SKF, SPxE, SRI, Stratasys, Technique Chassis, Trak Racer, and UNOH.

• Some sponsors have been updated in the Paint Kit, including:

  • Build Submarines (secondary color added)

• If you are currently consuming the /data API or interacting with the legacy /jforum endpoint, please see this post for changes coming in the December 2025 Release (2026 Season 1).

https://forums.iracing.com/discussion/84226/legacy-authentication-removal-dec-9-2025/p1?new=1

--------------------------------------------------------------

• The new Sim UI is here!

• The new Sim UI is a complete re-architecture and rebuild of the in-Sim user interface, built from the ground up on powerful modern technology and an all-new framework. 

• The initial experience has been crafted to function in a familiar way, with a fresh new look made possible by its modern rendering capabilities, along with multiple advancements in functionality and features, including:

  • Black Boxes: These now have minimized and expanded states. The Relative and Standings boxes display additional data.

  • Sim Options redesign: Options have had a significant reorganization, including the merging of the Replay and Driving graphics options. We’ve also added a clickable table of contents down the left-hand side, and to the right, we’ve added more information to explain the setting.

  • Alt-K to move UI: When pressing Alt-K to move elements around, you’ll find an additional toggle control to enable/disable all moveable elements, so now it’s easier to visualise those elements which normally only display when activated (such as flags and penalty notices).

  • Virtual Mirror size control: Via Alt-K, you can now also select the size of your virtual mirror from a drop-down menu.

  • Real-world clock: You now have access to your local wall-clock time via the F1 menu and also via an optional dedicated widget. This widget can be toggled in the Settings under the Interface tab in the On-Screen Displays section (Real Time Clock).

  • Camera Tool redesign: The Camera Tool is now accessible via a dedicated button found on the Session screen, and the tool itself is now more logically presented following a design update. The Ctrl-F12 binding is still available to toggle the Camera Tool.

  • Tooltips: The vast majority of controls now display tooltips when you mouse over them.

  • UI scale and opacity can now be adjusted while editing the layout or in Settings under the Interface tab in the Scaling & Opacity section.

  • All widgets can be made visible through a simple checkbox, and if you decide you don't like your changes, a convenient reset button is available. We've also made the UI editing mode easier to find, with some buttons to help you get started configuring.

• We are very excited about the future of the new Sim UI, and we want feedback about your experience, including what new features you want to see and how it should evolve. Additionally, if you experience any problems, we’d like to hear from you as well. To facilitate this, we have created a new Forum for providing feedback for the in-Sim UI, and encourage you to share your thoughts:

https://forums.iracing.com/categories/sim-ui

• The hybrid system for all of our hybrid car types has been overhauled for this release. This is an improvement for how we develop our vehicle power unit code. For more details on exactly what this means for each type of vehicle, please see this post from our Vehicle Development Manager:

https://forums.iracing.com/discussion/84630/hybrid-system-update-goals-scope-and-what-it-means-for-you#latest

• The hold delay for cars starting a race from pit lane has been increased by 3 seconds.

• The pace car pit exit speeds and timing for picking up the field have been improved.

• The pace car will now pull out of the pits a little bit earlier for cautions where the leader was early in the lap.

• The "!remove ..." chat command is intended to remove only a single person from the event. 

  • You may now use "!remove #N" with N being the full car number, provided that car only has a single declared driver. In that situation, that team’s one-and-only driver will be removed.

• Improved the simulated weather and time effects on the track before the first session begins to more accurately set the stage for the event.

• Fixed an issue where some paved off-track surface temperatures could be significantly different from paved track surface temperatures.

• AI Drivers are now ready to drive the following new vehicles:

  • Aston Martin Vantage GT3 EVO

  • Ford Mustang GT4

  • NASCAR Gen 4 Chevrolet Monte Carlo - 2003

  • NASCAR Gen 4 Ford Taurus - 2003

• AI Drivers are now ready to race at the following new locations:

  • Autódromo Hermanos Rodríguez (Mexico City) - all SEVEN configs

  • Charlotte Motor Speedway - EIGHT non-Dirt configs (fully re-trained)

  • Circuit of the Americas - NASCAR West

  • North Wilkesboro Speedway - Oval

  • Sonoma Raceway - NINE non-Dirt configs (fully re-trained)

  • World Wide Technology Raceway (Gateway) - Oval (fully re-trained)

• The seasonal curriculum for AI Drivers included the following courses this semester:

  • Track Refreshes - Re-Learning What You Thought You Already Knew

  • Geology 101: Dirt Identification Seminar

• AI Drivers have improved their racing skills with the following cars:

  • <Car Class> GT3 Class Cars

  • <Car Class> GT4 Class Cars

  • <Car Class> GTP Class Cars

  • Ferrari 499P

  • Super Formula Lights

• AI Drivers have improved their racing skills at the following track configs:

  • Bristol Motor Speedway - Dual Pit Roads, Single Pit Road

  • Chicago Street Course - 2023 Cup

  • Daytona International Speedway - Moto, NASCAR Road, Road Course

  • Dover International Speedway

  • Las Vegas Motor Speedway - Oval

  • Oulton Park Circuit - all EIGHT configs

  • Rockingham Motor Speedway - Oval

  • Texas Motor Speedway - Oval

  • Watkins Glen International - all FOUR configs

• The following adjustments have been made with Adaptive AI Racing:

  • Adaptive AI Challenge Skill spread and rate of change has been adjusted within single class events.

  • Adaptive AI drivers should generally be slightly more challenging.

• Fixed some AI Systems issues, including:

  • Fixed an issue with Adaptive AI in multiplayer Sessions where drivers joining the Session late were not being correctly registered.

  • Fixed a crash that could occur due to incomplete handling of gravel and mud surfaces by AI Drivers.

  • Fixed an issue with AI-driven Lotus 49 vehicles where the nose of the car would experience excessive gravitational forces whenever it left the ground - for example when driving off jumps.

• Adjusted the damage threshold where scrape textures begin to appear on vehicles.

• For OpenXR VR devices that support the “XR_EXT_eye_gaze_interaction” extension, we have added support for Dynamic Foveated Rendering. There are two new related settings, one is “Allow Eye Tracking” and the other is “Show Eye Tracking.”  The foveated rendering also requires an nVidia GPU RTX2000 series or better. 

  • Dynamic Foveated Rendering renders each eye at a lower resolution and then renders a higher-resolution inset wherever it detects that each eye is looking, resulting in a stereo image with less resolution around the edges and more resolution where you are actively looking.

  • Important Notice: The SteamVR runtime does not support eye tracking properly for some HMDs For instance, you must select the Pimax/Varjo OpenXR runtimes for those headsets for better results.

  • Not all VR headsets/runtimes support this capability. Check your hardware specs to verify.

  • - - KNOWN ISSUE: The vertical axis for eye-tracking is currently inverted with this release. We suggest disabling the eye-tracking for now, and using fixed Foveated (Options > Display > VR) until we check our developers’ glasses prescriptions and release a fix!

• Texture compression algorithms have been updated to provide higher quality visuals throughout the Sim, better GPU performance, and slightly shorter loading times.

• A new camera tool has been added, which allows for adjustments to the microphone offset.

• The limits of the listener controls in the camera tool have been adjusted.

• Added a new spotter message: "Pitting now for fuel will get us to the end of the race."

• New spotter messages have been added for Time Trials, including:

  • “You need to complete X laps for this Time Trial.”

  • “You had an incident. Your lap count has been reset.”

  • “You’ve completed the laps needed for this Time Trial.”

• Added variants for a few spotter messages, including:

  • “We need more laps for fuel data.”

  • "We’ve got good fuel data."

  • "You have enough fuel to finish the race."

  • "Remember, you need to pit for more fuel."

• Fuel-related Spotter messages will no longer play during Time Trials.

• The Italian spotter packs have been updated.

• The Spanish spotter packs have been updated.

• The Portuguese spotter packs have been updated.

• For force feedback, softened the profile of rumble strips in an effort to reduce the audible noise they produce in the 360Hz force feedback channel.

• Adjusted the dead zone on the Logitech G27 Wheel.

• The latest Fanatec API has been updated. This fixes a random rare lock-up that could occur for some users.

• A new variable, \[TrueForce] trueForceSetGain= 1, has been added to the “app.ini” file.

  • This value lets users turn off the auto setting of TrueForce gain to 100% when the Sim launches. This is helpful for users who use the wheel tuning menu to adjust the feel of TrueForce, rather than the built-in TrueForce gain hotkeys.

• The Moza API has been updated, which fixes an issue where the wheel could become unresponsive after a period of time.

• Fixed an issue where auto-fuel could silently edit the fuel value even when the system was disabled.

• Slightly lowered the chase camera angle to allow better visibility with wide aspect ratios.

• Fixed an issue where the Simulator could sometimes crash when attempting to save Replays.

• Fixed an issue where Active Reset would sometimes cause cut course slowdowns.

• Two new Boolean variables have been added: "PitRepairNeeded" and "PitOptRepairNeeded", that will be true when your car takes damage and needs mandatory or optional repairs.

• A handful of updates have been made to the Official iRacing Sporting Code, including:

  • Track debris is now mentioned for Yellow Flags.

  • Information surrounding the Connection Black Flag has been added.

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• iRacing setups have been updated.

• Class Balance of Performance has been adjusted

• Adjusted the windshield reflections.

• Headlight flash durations and rates have been adjusted.

• Headlight lens colors have been adjusted.

• iRacing setups have been updated.

• Updated starting masses, ride height rules, fuel tank sizes, pitstop times, camber limits and air pressure minimums to reflect current IMSA Pilot Challenge ruleset and BoP.

• This class now uses the latest tire model for both dry and wet compounds. 

• Tire compound specific ride height rules have been added.

• Tire warmer temperature has been reduced.

• Driveline drag and peak engine power outputs have been adjusted resulting in greater overall drive power at the wheels for all cars.

• BoP sensitive engine modelling items have been improved, this should result in more consistent BoP alignment across track types and locations.

• Overall car and tire performance now more accurately reflects real world minimum corner speeds and end of straightaway top speeds. It is specifically important to note that tire grip is lower now (2s/lap) and top speeds higher (~10 km/h), this does mean the cars are more challenging to drive now and will require an adjustment period. We advise that you start out cautiously and build up to the limit slowly.

• ABS, Traction Control and Stability Control (where fitted) systems have been updated.

• Brake systems have been tuned to hit appropriate maximum line pressures at maximum pedal input.

• Brake pad definitions have been adjusted to provide two options, 'Sprint' and 'Endurance', these pad options more accurately reflect available real world compounds and their temperature vs mu characteristics. Note, there is no delta in long term wear or degradation effects between these two options at this time.

• Damper profiles, adjustment ranges and bump rubber/stop profiles have been updated. This set of combined changes should noticeably improve compliance with curb strikes and rough surfaces for most cars.

• Spring perch offsets are now adjustable in 0.25 mm increments for higher precision.

• Wing position ranges and notation have been adjusted to align with real world notion and step size for each car.

• Aerodynamic downforce balance and sideforce profiles have been adjusted for all cars. 

• Garage layouts have been updated for clarity and more informative tech tips. 

• Differential builds have been adjusted to more closely align with reality where appropriate. 

• User adjustable low fuel warning and low fuel clear functionality has been added to all cars except the McLaren.

• Dashboards on opponent cars now more accurately reflect the car's status.

• Adjusted the windshield reflections.

• All previously created setups are obsolete due to platform height resets for all cars and other physics changes, please start from the updated iRacing baseline setups.

• Fuel economy has been updated for BoP.

• Headlight flash rate has been adjusted.

• iRacing setups have been updated.

• Added laptimes to the dash display.

• Fixed an issue that keeps the dash on when attempting to kill the ignition while above pace speed.

• iRacing setups have been updated.

• These cars are now AI-enabled!

• Substantially reworked drafting models for both intermediate and superspeedway packages following extensive feedback and testing.

• Power steering assistance has been reduced.

• The garage adjustment ranges for the front sway bar and rear springs have been reduced.

• iRacing setups have been updated.

• iRacing setups have been updated.

• Improved the in-car engine sounds.

• iRacing setups have been updated.

• A new digital dashboard has been added to these vehicles.

• Updated the "NASCAR Race Truck" front fender decal.

• iRacing setups have been updated.

• iRacing setups have been updated.

• (ALL) - Slightly reduced the damage required in order to trigger an incident penalty for body panels.

• iRacing setups have been updated.

• These vehicles are now capable of refueling during an event.

• iRacing setups have been updated.

• iRacing setups have been updated.

• iRacing setups have been updated.

• Weight has been increased slightly for Balance of Performance.

• Removed IMSA Short gear stack.

• The front splitter height has been reduced.

• BoP change: Aerodynamic drag has been reduced slightly.

• NEW CAR!

• A new Sports Car, the Aston Martin Vantage GT3 EVO, is now available for purchase and use within iRacing!

Carrying on a long line of sports cars produced by the iconic British manufacturer, the Aston Martin Vantage GT3 first took to the track in 2019. Its EVO variant was unveiled in 2024, both as a new build and an upgrade kit for the original car.  It features significantly revised aerodynamics—especially in the nose area—and suspension from its predecessor. Under the hood, it’s powered by a twin-turbo 4.0-liter V8 that can produce up to 600 horsepower depending on regulations. Wins for previous Vantage entries at Le Mans, Daytona, and Spa have proven a tall order to follow, but success has continued with the GT3 EVO model. Perhaps its biggest early triumph came in the 2024 24 Hours of Spa, won overall by Comtoyou Racing by more than 30 seconds; in 2025, it added a Gold Cup division win with https://Verstappen.com Racing, whose lineup included former iRacing Nurburgring 24H winner Chris Lulham.

• Add the Aston Martin Vantage GT3 EVO to your garage today from the iRacing Store!

• AI Drivers are already able to pilot the Aston Martin Vantage GT3 EVO!

• The Aston Martin Vantage GT3 EVO is rain-racing ready!

• Inertia properties have been recalculated resulting in improved overall response.

• Fuel tank location has been adjusted for accuracy.

• Suspension installations have been adjusted to produce more accurate wheel rates

• iRacing setups have been updated.

• Body aerodynamic profile has been adjusted, this should improve performance for this car when in high downforce configuration (higher rear wing angle, higher rear ride height).

• Anti-Roll bar rates have been adjusted to more accurately reflect wheel rate contributions. 

• Increased the rear camber adjustment range to allow for lower values at lower ride heights.

• This vehicle has been updated to the current EVO model. This update was made to the existing car package, so all owners of the car will receive the update automatically and for free.

  • Vehicle physics parameters and artwork have been updated for the EVO model.

  • Physics changes include:

    • Added an FIA gear stack option.

    • The differential has different ramps - more lock on power, less on coast.

    • It is now possible to use more differential friction faces for increased locking.

    • Reduced front suspension caster.

    • Changed rear suspension kinematics slightly (more anti-lift and less anti-squat).

    • New anti-roll bars have more adjustment range and a new naming convention.

    • The suspension spring rate range is now larger and the steps between rates are greater.

    • The steering ratio is 8% faster.

    • Bump rubbers and adjustable gaps have been added.

    • Ride heights are now directly adjustable (no more spring perch adjustments).

    • New KW dampers based on data from BMW.

    • All new iRacing setups (old setups will no longer load - due to this physics overhaul).

• A low fuel warning indicator has been added to the dash display.

• Onboard engine and transmission sounds have been improved.

• Removed IMSA Short gear stack.

• iRacing setups have been updated.

• NEW CAR!

• A new Formula car, the Dallara IL-15, is now available for purchase and use within iRacing!

• The series currently known as INDY NXT debuted in 2002 as a feeder series for the then-Indy Racing League, and it took on its current name in 2023 when it was acquired by Penske Entertainment. It has become highly effective at graduating drivers into the premier NTT INDYCAR Series, with future INDYCAR champion Josef Newgarden and fellow stars Patricio O’Ward and Kyle Kirkwood each using INDY NXT titles to springboard their future successes at the highest level. INDY NXT’s weapon of choice is the Dallara IL-15. Introduced in 2015, it features 450 base horsepower (plus an additional 50 with push-to-pass) coming out of a turbocharged 2.0-liter inline-four. The car received updates in 2021 including a halo for driver safety and new engine tuning by AER to run a full season without a rebuild. The latest update to the car came in 2023, when Firestone took over as tire supplier after Penske’s acquisition of the championship.

• Add the Dallara IL-15 to your garage today from the iRacing Store!

• The Dallara IL-15 is rain-racing ready!

• Fixed an issue with the driver leg animations not functioning properly.

• Enabled the low fuel warning acknowledgement. The low fuel warning point is now adjustable in the garage menu.

• iRacing setups have been updated.

• (Limited) - Reduced the stiffness of the rear quarter panels and the rear frame.

• iRacing setups have been updated.

• iRacing setups have been updated.

• Updated the opponent car dashboard to more accurately represent the car's running state.

• Removed IMSA Short gear stack.

• Windshield wiper shake animation has been added.

• Hybrid deployment is now limited to 100kW maximum. High speed cornering deployment is also disabled.

• iRacing setups have been updated.

• Removed IMSA Short gear stack.

• BoP change: Aerodynamic downforce has been reduced slightly.

• NEW CAR!

• A new Sports Car, the Ford Mustang GT4, is now available for purchase and use within iRacing!

• Unveiled in the summer of 2023 for use in 2024 and beyond, the current Ford Mustang GT4 has become a popular choice in the category around the world. If its uniquely American style wasn’t enough to sell the skeptics, its immediate results were; in its first race weekend, part of the IMSA VP SportsCar Challenge opener at Daytona, KohR Motorsports’ Luca Mars swept both races on the way to scoring the class title later that year. As with many other manufacturers, Ford built the Mustang GT4 for the use of customer teams, saving its factory-backed efforts for the GT3 division and higher. Developed in conjunction with Multimatic Motorsport, the Mustang GT4 boasts a 5.0-liter Coyote V8 built by Ford Performance in Michigan. Other features include Multimatic DSSV dampers, natural fiber body panels, and a GT4-specific aero package.

• Add the Ford Mustang GT4 to your garage today from the iRacing Store!

• AI Drivers are already able to pilot the Ford Mustang GT4!

• The Ford Mustang GT4 is rain-racing ready!

• Updated the dash box water temp label.

• AI Drivers are now capable of piloting this historic vehicle!

• AI Drivers are now capable of piloting this historic vehicle!

• iRacing setups have been updated.

• The headlight lens no longer casts green light.

• iRacing setups have been updated.

• Brake cooling has been increased.

• The front splitter height has been reduced.

• BoP change: Aerodynamic drag has been reduced slightly.

• Adjusted the windshield reflections.

• iRacing setups have been updated.

• Adjusted the windshield reflections.

• iRacing setups have been updated.

• Enabled the low fuel warning acknowledgement. The low fuel warning point is now adjustable in the garage menu.

• Hired an exorcist to remove a strange floating black object that could only be seen in the rear-view mirrors.

• iRacing setups have been updated.

• (ALL) - Slightly reduced the damage required in order to trigger an incident penalty for body panels.

• Fuel tank location has been adjusted for accuracy.

• Suspension installations have been adjusted to produce more accurate wheel rates.

• Brake bias adjustment has been removed.

• Engine torque curve has been adjusted.

• This car now uses an e-diff as per the real car.

• Baseline caster has been increased slightly for improved steering feel.

• Removed IMSA Short gear stack.

• BoP change: Fuel economy is slightly worse.

• Differential friction face options have been removed. 8 faces are now the locked default.

• Suspension installations have been adjusted to produce more accurate wheel rates.

• Anti-Dive and Anti-Lift properties have been adjusted. 

• Engine torque curve has been adjusted.

• iRacing setups have been updated.

• iRacing setups have been updated.

• (Modified - SK) - Car and driver animations have been updated.

• (BOTH) - iRacing setups have been updated.

• Some logos have been updated.

• Front spring rate is now adjustable.

• ESC and TC off buttons have been added.

• Mass placement has been adjusted to achieve more accurate corner weights.

• Inertia properties have been recalculated to account for the change in mass distribution.

• Fuel tank location has been adjusted for accuracy.

• Suspension installations have been adjusted to produce more accurate wheel rates.

• Anti-Roll bar rates and ranges have been adjusted to more accurately reflect per position wheel rate deltas and contributions.

• Engine torque curve has been adjusted.

• The low fuel warning point is now adjustable in the garage menu.

• Removed IMSA Short gear stack.

• BoP changes: Reduced aerodynamic drag and moved center of pressure balance rearward.

• Adjusted the windshield reflections.

• iRacing setups have been updated.

• iRacing setups have been updated.

• iRacing setups have been updated.

• Chassis hulls have been stiffened.

• iRacing setups have been updated.

• Fixed an issue where the inside front tire would take much longer to change than all the others. The total time to change all 4 tires remains the same as before.

• iRacing setups have been updated.

• Windshield wiper shake animation has been added.

• Enabled the low fuel warning acknowledgement. The low fuel warning point is now adjustable in the garage menu.

• Fixed an issue with the rear view mirror not showing the in cockpit view.

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• NEW TRACK!

• A new track with SEVEN configs, including both Sports Car and Oval configs, Autódromo Hermanos Rodríguez (Mexico City), has been added to iRacing!

• Designed as a thesis study in the early 1950s by student Oscar Fernandez, Autódromo Hermanos Rodriguez has hosted many of the world’s most iconic racing series over its storied history. From what is now known as the Mexico City Grand Prix to the NASCAR Cup Series’ first-ever event outside of the United States in 2025, the track has evolved numerous times over the years to accommodate different vehicles and advances in driver safety. Most of Autódromo Hermanos Rodriguez’s layouts, including the current 2.67-mile Grand Prix layout, feature a lengthy front straightaway into a right-angle, right-handed first corner. Top-tier open-wheel cars can reach a top speed exceeding 220 miles per hour before this initial braking zone. Also unique to the venue is the Foro Sol section, which sends drivers through baseball stadium seating; this same area of the track has also been used for the 2019 Race of Champions. The Autódromo also boasts a flat, one-mile oval that can both host stock car races and serve as the basis for shorter road racing layouts.

• Add Autódromo Hermanos Rodríguez (Mexico City) to your account by visiting the iRacing Store today!

• AI Racing is fully available for ALL SEVEN configs for Autódromo Hermanos Rodríguez (Mexico City)!

• The Armco wall outside of pit road is now a solid object.

• Race control has been updated to prevent course cutting at Turn 11 and Turn 16.

• NEW TRACK SCAN!

• This track has undergone a significant art overhaul and has been updated to match its current real-world appearance. This update includes new laser scans of updated areas. Buildings, track-side objects, and scenery have been updated. Trees, shrubs, and 3D foliage have all been updated and added. All textures, shaders, and lighting have been updated to our current artistic standards. This is part of the “NASCAR Refresh” project, which involves updating and modernizing all tracks on the NASCAR schedule.

  • With the completion of this artwork overhaul, the following brand-new track configs are now available: Roval - 2025, Roval No Chicanes, and Legends RC - 2025.

  • With the completion of this artwork overhaul, the following track configs have been re-released as new versions, which causes the original configs to be \[Retired] - they will no longer be available for use in iRacing: Oval - 2018, Legends Oval, Roval - 2019, Legends RC Long, Legends RC Short, and Rallycross.

  • With the completion of this artwork overhaul, the following track configs are now \[Retired] and are no longer available for use in iRacing: Roval - 2018, Roval Long, and Legends RC Oval Medium.

• Track limits and Track Rules have been updated.

• This track has received a significant art overhaul. Buildings, track-side objects, and scenery have been updated. Trees, shrubs, and 3D foliage have all been updated and added. All textures, shaders, and lighting have been updated to our current artistic standards. This is part of the “NASCAR Refresh” project, which involves updating and modernizing all tracks on the NASCAR schedule.

• Slowdown penalties have been added for the apron in both corners.

• This track has undergone a significant art overhaul and has been updated to match its current real-world appearance. Buildings, track-side objects, and scenery have been updated. Trees, shrubs, and 3D foliage have all been updated and added. All textures, shaders, and lighting have been updated to our current artistic standards. This is part of the “NASCAR Refresh” project, which involves updating and modernizing all tracks on the NASCAR schedule.

• A new track configuration has been added, NASCAR West. This layout has track limits that closely resemble those used during the real-world 2025 NASCAR weekend at Circuit of the Americas.

• Track rules have been updated and clarified.

• The slow down penalties for big cuts in the final corner and Turn 1 of the Grand Prix, West, and NASCAR West configurations have been increased.

• Relaxed the slow down penalty at pit entry. It should now take 4 wheels over the white line to trigger the penalty at the apex.

• Some floating grasses in Turn 1 have been trimmed.

• This track has undergone a significant art overhaul and has been updated to match its current real-world appearance. Buildings, track-side objects, and scenery have been updated. Trees, shrubs, and 3D foliage have all been updated and added. All textures, shaders, and lighting have been updated to our current artistic standards. This is part of the “NASCAR Refresh” project, which involves updating and modernizing all tracks on the NASCAR schedule.

• (Road Course) - This config has been updated with the latest LeMans chicane.

• Pit entry and exit points have been updated to match the real world, and the Restart Zone has been updated.

• Fixed an issue where floating crowds would appear when track detail was lowered.

• Some follow-up work from the NASCAR Refresh release last season has been completed, including:

  • Updated pit stall lines and some track surface textures.

  • Updated advertisements, foliage, catch fences, crowds, and logos.

• (NASCAR Oval) - Restart Zone rules have been added. Pit exit acceleration lane paint lines have been added. The caution panels have also been removed from this configuration.

• Fixed an issue where the Road Course tire barriers would disappear when Object Detail settings were set to “Off”.

• Removed some weekend vehicles that were intersecting with a track wall.

• Additional visitor vehicles have been added.

• The visibility of the grandstand tower is now correctly tied to the visibility of the main grandstand.

• (Oval) - 3D Grass has sprouted at this track config!

• Fixed a variety of issues where objects would appear to pop in and out of existence as a camera changed distances from them.

• Fixed a track surface decal that wasn't blending properly with the track surface.

• Unburied some crowd members from the ground.

• Fixed an issue where a ground plane was intersecting with barriers.

• NEW TRACK SCAN!

• North Wilkesboro Speedway has been rescanned and remodeled from scratch using current day laser scan data.  

• For the rescan version of the track, all artwork has been built to current standards and practices.

• The previously existing historic track config remains available and has been post-pended with “1987” for clarity.

• Night lighting is enabled at this track!

Nürburgring

• 3D grass seeds have been adjusted so they no longer grow on AstroTurf.

• Fixed an issue where opponent cars could appear to jump into the air when cutting close to the inside wall of Turn 2.

• This track has undergone a significant art overhaul. Buildings, track-side objects, and scenery have been updated. Trees, shrubs, and 3D foliage have all been updated and added. All textures, shaders, and lighting have been updated to our current artistic standards. This update captures the condition of the track and facility when it was originally scanned.

• Fixed an issue where non-existent crowds could fire off flash bulbs.

• The start of pit lane has been relocated to its real-world location.

• This track’s artwork overhaul remains in progress and will be completed soon! There are no artwork updates or changes with this 2025 Season 4 Initial Release.

• Fixed an issue with the physics properties of the tire bundles at Turn 3.

• Removed a truck that was parked too close to the action.

• NEW TRACK SCAN!

• This track has been rescanned and remodeled from scratch to match the current state, including the racing surface and all scenery.

• This is part of the “NASCAR Refresh” project, which involves updating and modernizing all tracks on the NASCAR schedule.

• With the completion of this new track model, the following brand new track configs have been added: Short, Sportscar, and Sportscar Alt.

• With the completion of this new track model, the following track configs are re-released as new versions, which causes the original configs to be \[Retired] and will no longer be available for use in iRacing: NASCAR Long, NASCAR Short, Open Wheel 2008-2011, Open Wheel 2012-2018, and Open Wheel pre-2008.

• The Rallycross config has been unaffected by these changes.

• Fixed an issue where the infield terrain could appear extra glossy.

• This track has undergone a significant art overhaul and has been updated to match its current real-world appearance. Buildings, track-side objects, and scenery have been updated. Trees, shrubs, and 3D foliage have all been updated and added. All textures, shaders, and lighting have been updated to our current artistic standards. This is part of the “NASCAR Refresh” project, which involves updating and modernizing all tracks on the NASCAR schedule.

• (1000 - Chicane & 2000 - Full) - A full pace lap is now performed at the track configs.

• Track surface bumpmap has been updated.

• A missing flagger has been added.

• This track has undergone a significant art overhaul and has been updated to match its current real-world appearance. Buildings, track-side objects, and scenery have been updated. Trees, shrubs, and 3D foliage have all been updated and added. All textures, shaders, and lighting have been updated to our current artistic standards. This is part of the “NASCAR Refresh” project, which involves updating and modernizing all tracks on the NASCAR schedule.

• Track limits, rules, and curbs have been updated.

  • (Classic & Cup) - Track limits closely resemble the real world NASCAR weekend rules.

  • (Boot & Classic Boot) -  Track limits closely resemble sports car weekends.

  • Bus Stop curbing has been updated to match NASCAR and IMSA configurations, depending on your selected track layout.

• NEW TRACK SCAN!

• This track has been rescanned and remodeled from scratch to match the current state, including the racing surface and all scenery.

• This is part of the “NASCAR Refresh” project, which involves updating and modernizing all tracks on the NASCAR schedule.

• (Road Course) - This config is unaffected by these artwork changes.

- (Rallycross) - Eliminated the potential for course cuts by adding physical barriers.

This Hotfix Release contains critical fixes for issues with the 2025 Season 3 Release.

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• Fixed a critical issue with the Moza API that was causing the Simulator to crash after running for nearly 3 hours.

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• Improved the pit limiter light implementation.

• MPG has been added back onto the digital display.

This Patch Release contains updates and fixes for the 2025 Season 3 Release.

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- 360Hz and Wheel LFE APIs have been re-enabled.

- Fixed a memory instability that would cause customers with Moza devices to crash out of the Simulator after 2 hours.

- Fixed an intermittent crash that would sometimes affect certain Fanatec wheels.

- Fixed an issue where an invasive species of super bright grass had begun sprouting at Rallycross tracks. Groundskeepers have eradicated it, and will remain on high alert for the next week.

- Two new boolean variables, "PitRepairNeeded" and "PitOptRepairNeeded", have been added which will be true when the user's car takes damage and needs mandatory or optional repairs.

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- Updated the low fuel warning clears to be momentary presses. The trigger point for the low fuel warning is now adjustable in the garage screen.

- - The low fuel warning clear button is also now enabled for the BMW M Hybrid V8.

- Base weight has been increased by 20 kg and ride height rules have been updated to meet the latest real world technical specification.

 - - Target brake bias has been moved rearwards for improved turn-in response.

- iRacing setups have been updated.

- Adjusted the ride height reference locations and suspension installation to allow for reduced bump stop contact and better ride quality. 

- iRacing setups have been updated.

- Nose mounts are now replaced whenever front wing damage is repaired.

- Nose mounts are now replaced whenever front wing damage is repaired.

- Updated the textures, templates, and patterns to reflect the B-pillar and rear-end adjustments.

- Damage visual effects have been updated.

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- Fixed an issue where floating crowds would appear when track detail was lowered.

- Fixed an issue where floating crowds would appear when track detail was lowered.

- A missing track rule has been updated.

This Hotfix Release contains critical fixes for issues with the 2025 Season 3 Release.

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• The recently added alert warning to indicate high CPU usage has been adjusted to only display if the system has an active network alert AND the CPU alert level would be high (red in the system meter).

• We have temporarily disabled Moza 360 Hz and Wheel LFE effects.

  • There is a critical issue we are investigating with Moza developers that can cause the Simulator to crash after about 2 hours of operation. Once we have a stable fix, we will release it and re-enable this feature in a future Patch.

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• Removed some defunct development code.