Vehicle Physics

GTP Class | Speed & Strategy

iRacing GTP Hybrid MGU-K Update – Why Manual Control Was Removed

The iRacing GTP hybrid MGU-K system has been completely overhauled in the latest season update. Drivers quickly noticed that manual hybrid controls such as Quali, Attack, and Build are now unavailable. Even with keybindings set correctly, the option is grayed out in the control menu, and the black box display no longer shows MGU-K mode…

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Coming #soon

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…

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Coming #soon

iRacing Shares First Look at NTMv10

The iRacing NTMv10 tire model has been teased in the latest development blog, giving fans an early look at what could be the sim’s most advanced tire system to date. Several screenshots reveal testing tools, contact patch heat maps, and new data visualizations used by the physics team to fine-tune the next-generation model. Executive Producer…

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Coming #soon

A New Era for Tire Physics

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…

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