The GTP tire update release is now live as part of the iRacing 2026 Season 1 Patch 2. This update officially arrived on January 5, 2026. It serves as the final preparation for teams heading into the Daytona 24. This patch introduces the Michelin Vision tires to the entire GTP field. Consequently, drivers now have a more realistic and manageable tire model for the biggest endurance race of the year.
Vision Tread: Visuals and Nano-Laser Tech
The GTP tire update release brings a striking new look to the simulation. Specifically, iRacing implemented the “Vision” tread pattern across all prototype models. This design utilizes a nano-laser-etched pattern in the tire mold. This creates an organic, web-like texture on the rubber.
Furthermore, a new metallic shader enhances the visual fidelity of the sidewalls. This shader accurately reproduces the cellular pattern found on real-world Michelin tires. While the tread pattern wears away quickly during a stint, the improved visuals remain visible in replays and during pit stops.
Physics Improvements: Warmup and Stability
The primary goal of the GTP tire update release is to improve the quality of life for drivers. Specifically, the physics team focused on cold tire warmup. Previously, out-laps were notoriously dangerous. Now, the tires reach their operating window much faster. This makes the car significantly more predictable during the first few laps of a stint.
- Turn-in Feel: The update provides more direct feedback through the steering rack.
- High-Speed Balance: The cars now feel more planted in high-speed sweepers.
- Snap Oversteer: The new model reduces the risk of sudden traction loss.
Balance of Performance (BoP) and Car Changes
To ensure fair competition, the GTP tire update release includes a major BoP pass. Several cars received weight and aerodynamic adjustments to match the new tire properties.
| Car | Weight Change | Major Updates |
| Acura ARX-06 | -5 kg | Aero adjustments and updated setups |
| Ferrari 499P | -10 kg | Reworked suspension and brake cooling |
| BMW M Hybrid V8 | No change | Slightly increased fuel burn rate |
| Cadillac V-Series.R | No change | Updated spinning tire textures |
The Ferrari 499P received the most extensive changes. Specifically, developers updated the MGU friction and engine cooling parameters. Furthermore, the rear suspension geometry was refined to improve mechanical grip.
Daytona 24 Just Ahead
The GTP tire update release provides the tools you need for the upcoming Daytona 24. Because this event is just days away, you should begin testing immediately. These changes to the Michelin Vision tires will help you survive long night stints. Whether you are chasing a podium or just trying to finish, the improved stability will be your best ally.
Ensure your team downloads the latest patch today. Furthermore, you must practice with the new cold-tire behavior. The margins for error at Daytona are razor-thin. Therefore, having full confidence in your rubber could be the difference between a win and a trip to the garage. Good luck to everyone. We will see you on the high banks.
