The iRacing NTMv10 tire model is now officially in development. In the latest dev blog, Executive Producer Greg Hill confirms that the physics team has begun work on a completely new tire architecture. This upgrade aims to improve contact patch modeling, heat buildup, and overall handling across every car class.
Hill describes the project as “a huge leap forward” for vehicle realism. The new system changes how tires generate grip, respond to temperature, and transfer load during cornering. It’s the most ambitious tire overhaul since iRacing launched its previous NTMv7 model years ago.
What’s Changing with NTMv10
The next-gen iRacing NTMv10 focuses on creating a more detailed relationship between the tire and track surface. Developers say the new architecture models the contact patch in multiple slices, allowing for more accurate wear and heat simulation. Each slice reacts differently based on rubber temperature, pressure, and road condition.
This modular structure also means future updates can target specific parts of the tire model without rebuilding it from scratch. As a result, iRacing will be able to tune handling faster and apply improvements to every car more easily.
In addition, the new model introduces better force feedback, multi-groove grip logic, and a more realistic sense of tire “moment.” That last element — how tires flex and recover — affects what drivers feel through the steering wheel.
Building for the Future
According to the May update, work on NTMv10 runs in parallel with iRacing’s other major projects, including its DX12 graphics engine and new physics core. The company has even expanded its physics team to handle the added complexity.
This growth ensures that NTMv10 can reach a wider range of cars, from F1 to dirt ovals, once testing begins.
Developers also confirm that the new model will integrate with the engine’s higher physics sampling rate. This should reduce latency and create smoother transitions when tires lose or regain grip — a long-requested improvement from members.
Tires are the most important connection between a car and the track. By overhauling this system, iRacing sets the stage for a new level of driving precision and feedback.
The iRacing NTMv10 promises better balance, more predictable slides, and deeper setup options.
For competitive racers, that means fewer surprises mid-corner and more consistent lap-to-lap handling. For casual drivers, it should make the cars feel more natural and rewarding to drive.
This update shows iRacing’s ongoing focus on realism and its willingness to rebuild core systems from the ground up.
