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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Why the Cadillac GTP Loses Speed on Straights in iRacing
The Cadillac V-Series.R GTP loses noticeable speed on long straights compared to the BMW and Porsche. Here is what the community thinks is causing it and what you can adjust in your setup.
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Porsche 911 Cup (992.2) Update History and Physics Changes
The arrival of the Porsche 911 Cup (992.2) in the 2026 Season 1 build marks one of the most significant updates in the history of iRacing’s one-make racing. This new car is not just a visual upgrade. It is a complete mechanical overhaul that brings the simulation in line with real-world 2026 specifications. The Transition…
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How iRacing Arcade Differs from iRacing — And Why That’s a Good Thing
When iRacing Arcade was announced, many fans immediately asked the obvious question: “How is this different from iRacing itself?”After all, both share the same studio name, licensed cars, and authentic tracks. Yet despite those similarities, the two games target completely different audiences — and that’s what makes the pairing so smart. Rather than competing with…
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NASCAR Next Gen Cars Update – Tire and Physics Tweaks
Handling and durability improvements applied.
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Technical Update: Ray FF1600 Gets 4-Bar Linkage Suspension
iRacing has implemented a new 4-bar-linkage suspension geometry model for the Ray FF1600.
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Rallycross Cars in iRacing: Physics & Balance Tweaks
Refinements improve drivability of the iRacing Rallycross cars.
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iRacing Dirt Refresh: Dirt Midget Overhaul
Physics, tires, and geometry refreshed as part of Dirt Refresh.
