Today the racing simulator iRacing has been updated with the second patch of the first season of 2025, and it comes with plenty of changes to refine the experience.
There are plenty of changes to a number of cars and tracks, but that’s not all, as the developers are working on removing every race of the old Kamu EasyAntiCheat to complete the transition to the Epic Games EAC.
Some updates have been made to race control as well, including one that gives more control to admins during single file restarts.
A potentially relevant change has been made to the AI, which should be more capable of recovering from crashes and offroad excursions during parade laps.
You can read the full patch notes below.
Simulation
Anti-Cheat
- The antiquated versions of EasyAntiCheat (Kamu EAC) files have been renamed and relocated in the iRacing file structure to prevent confusion with the currently active and in use Epic Game EasyAntiCheat (EOS) version of Anti-Cheat software.
- Some additional steps have been taken to remove the previous generation of the AntiCheat system used by iRacing (Kamu/EAC).
- The iRacing Updater will now ask you if you want to uninstall the old Kamu/EAC derivation of EasyAntiCheat, if you happen to still have it installed and it is associated with iRacing (Game 36). If when prompted you choose “No”, it won’t ask again in the future. Also note that the old Kamu/EAC installer, and our .bat script that uses it, have been moved to a subdirectory, to distinguish it as being “old” and obsolete.
Race Servers
- Made a change to how the scheduler creates Open Practice Sessions.
Race Control
- Fixed an issue where a Lucky Dog driver could be incorrectly forced to give up spots to lapped cars after a delayed green. We now make sure the EOL penalty isn’t applied again when entering the “Two to Green” state a second time.
- Consecutive single file restarts is now a value that may be overridden by the admin “!restart” command.
- The number of laps gap between cautions used by consecutive single file restarts is now admin overridable with: !csf N
- The default value is 2 laps gap. Acceptable range is 1-10 laps. Setting to 0 will revert to whatever the default setting for the session is (2).
- Consecutive single file restart behavior will not happen during green-white-checkered laps (GWC), the normal restart type will be used instead.
AI Racing
- AI Drivers have improved their ability to recover from crashes or going off-course during parade laps.
Graphics
- The mip map tossing algorithm has been updated.
- Fixed a compatibility issue with some OpenXR runtime states.
- Fixed an issue for users with 9th and 10th generation Intel CPUs running on Windows 10 who are receiving random Simulator crashes.
Cars
<Car Class> GTP
- For the damage model, reduced friction on plank hulls to reduce grounding and snagging.
<Car Class> NASCAR Cup Series Gen 7
- Drafting configurations for running at super speedways have been updated.
Dallara P217
- For the damage model, some material properties have been tuned to reduce sparks from ground contacts.
Dirt Mini Stock
- For the damage model, hyperextension limits have been updated.
Dirt Sprint Car
- (410) – iRacing setups have been updated to suit longer race lengths.
Ferrari 499P
- For the damage model, some parameters for the vehicle plank hull have been adjusted to slightly reduce friction, prevent ground snags on curbs, and reduce bouncing.
Ligier JS P320
- Fixed an issue with some incorrect areas of windshield reflections.
Lotus 79
- For the damage model, some material properties of the sidepod hulls have been updated to reduce sparks.
McLaren 720s GT3 EVO
- For the damage model, slightly increased the break limits for the rear panel.
NASCAR Whelen Tour Modified
- iRacing setups have been updated.
SCCA Spec Racer Ford
- For the damage model, raised the break damage threshold for the rear wheels, and adjusted the bodywork detachment properties to prevent bodywork from bouncing.
Super Dirt Late Model
- iRacing setups have been updated to suit longer race lengths.
Super Late Model
- iRacing setups have been updated.
Tracks
Circuit de Nevers Magny-Cours
- Added a slowdown to prevent racers from using the pit exit to cut Turn 1.
Huset’s Speedway
- Updated the track parameter initializations, which dries and roughs up the apron, making it less tempting to drive on, and fixes an issue where some loose dirt was missing from track initialization.
Kevin Harvick’s Kern Raceway
- (Dirt Mini Oval) – Time penalties have been adjusted for racers attempting to gain time below the yellow hose.
Misano World Circuit Marco Simoncelli
- (Grand Prix & Grand Prix 2007) – The slowdown penalty for straight-lining the Turn 1-2 complex through the gravel has been increased.
Silverstone Circuit
- (International) – Added a slowdown to prevent racers from using the runoff in the final corner for extra speed at the start of qualifying.
Sonoma Raceway
- Fixed an issue where the race servers could crash if an event at this track using Short Pace Laps and Rolling Starts included more than 60 participants.
Virginia International Raceway
- (Grand Course & Full Course) – Added a slowdown to prevent racers from buzzing Barney’s cousin in the South Course pit lane.
[Legacy] Silverstone Circuit – 2008
- (Grand Prix, Historic Grand Prix, & Southern) – Adjusted slowdown penalty at Club corner.
If the name iRacing doesn’t ring a bell, it’s a subscription-based, esports-focused racing simulation platform on PC considered by many one of the most realistic in the industry. Many professional racing drivers train on its LIDAR-scanned tracks that precisely reproduce their real counterparts.
Another element that makes it attractive as an esports platform is the implementation of racing regulations closely related to real motorsports to create an online esports environment that feels as professional as possible, encouraging clean racing and fair play over winning.
iRacing partners with several real-world racing series and organizations including NASCAR, IMSA, the FIA, and many more. Recently, its developers also launched a partnership with Microsoft Research to implement Large Action Models AI in the game.
