iRacing published Patch 4 for the 2025 Season 4 build on 2025-11-18. The small but focused release targets a standard framerate drop, improves AI behavior at Circuit des 24 Heures du Mans, and delivers several car and UI tweaks.
Patch Notes – iRacing – 2025.11.18.02
Simulation
Performance
- Fixed a recent and prevalent issue where framerate significantly drops after racing for some length of time.
Race Control
- Slightly improved the precision used for verifying missed checkpoints and course cut black flags.
AI Racing
- AI Drivers have improved their racing skills at Circuit des 24 Heures du Mans.
Audio
- Fixed an issue where the RPM on nearby opponent cars could appear to sound substantially too high.
User Interface
- 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.
Controls
- Updated to the latest Simucube API.
Cars
Audi 90 GTO
- Brake bias adjustments are now allowed in Fixed Setup events.
Cadillac CTS-V Racecar
- During pit stop repairs, all vehicle damage may now be fully repaired.
Ford Mustang GT4
- Improved windshield wiper animations and visual effects.
HPD ARX-01c
- Brake bias adjustments are now allowed in Fixed Setup events.
Nissan GTP ZXT
- Brake bias adjustments are now allowed in Fixed Setup events.
Pontiac Solstice
- During pit stop repairs, all vehicle damage may now be fully repaired.
VW Jetta TDI Cup
- During pit stop repairs, all vehicle damage may now be fully repaired.
[Legacy] Dallara IR-05
- Brake bias adjustments are now allowed in Fixed Setup events.
[Legacy] Riley MkXX Daytona Prototype – 2008
- During pit stop repairs, all vehicle damage may now be fully repaired.
- Brake bias adjustments are now allowed in Fixed Setup events.
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iRacing
Developed by iRacing
From NASCAR, rallycross, and Aussie Supercars to sports cars and Grand Prix racing, iRacing has it all. All you need is a computer, a gaming wheel or game pad that simply plugs into the USB port of your computer and an Internet connection. iRacing centrally organizes all of the racing for you with over 150 cars and tracks, 40 official series , or you can choose to host your own race or race in one of over 800 private leagues.
- Genre: Racing, Simulator, Sport
- Platforms: PC (Microsoft Windows), Oculus Rift
- Modes: Single player, Multiplayer, Massively Multiplayer Online (MMO)
- Release: 2008-08-26
- Publisher: iRacing.com Motorsport Simulations, iRacing
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Age Rating:
ESRB E
- IGDB Rating: 92.3/100
