iRacing Physics Islands Explained
iRacing Physics Islands is a multithreaded refactor of the core physics loop that cuts CPU overhead by 50 percent in full-field races. Here is how it works and what it enables.
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iRacing Rebuilds the Mazda MX-5 for Season 4
The Mazda MX-5 Season 4 update re-engineers the car’s suspension, engine, and tires from scratch. Here is what every MX-5 Cup driver needs to know before Season 4.
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iRacing Confirms Track Reverb and Driver Gear for Season 4
iRacing has confirmed Track Reverb audio, new driver gear, and a physics overhaul for an undisclosed oval car for Season 4. Here is what the developer has officially committed to for the September build.
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iRacing 2026 Season 4: Career Mode, Valkyrie, Bahrain, and Physics Overhaul Confirmed
iRacing 2026 Season 4 brings Career Mode, the Valkyrie AMR-LMH, Bahrain International Circuit, and a physics multithreading overhaul to the platform in early September.
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iRacing Oval Refresh Phase 2: Mastering Dynamic Track Surfaces
iRacing officially launched Oval Refresh Phase 2 to revolutionize how drivers experience stock car racing. This update changes how rubber interacts with the track surface during a long run. Specifically, the simulation now calculates how tires tear rubber from the surface versus how they deposit it. Consequently, multi-groove racing is now more viable than ever…
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GT4 Tire Model Update: Struggles, Strategy, and Warm-Up Tips
iRacing’s Season 4 update introduced a revised tire model for the GT4 class, and it’s proven to be one of the most impactful changes of the season. Drivers across multiple platforms have noticed a distinct shift in how the cars behave — particularly with tire temperature buildup, wear, and grip consistency over long runs. If…
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NTMv10 Tire Model Enters Final Testing Phase
The iRacing NTMv10 tire model is entering its final round of internal testing.In the August 2025 development update, iRacing confirms that the new physics system is almost complete after more than a year of work. Developers say NTMv10 will deliver major upgrades to tire heat simulation, force feedback, and overall car feel. This project is…
