Adjust wear using [Realtime] TemporaryAbrasion=1e-10 // m^3/J volume of rubber sheared per Joule energy (should be affected by temperature or possibly WLF in future) Keep in mind wear is a bit limited at the moment. None of the items under [Realtime] require regeneration of the entire lookup table. A bit more information will be provided with regard to these when the TGM doc gets an update. Almost certainly you need to use a DT multiplier of less than 1.0 Information about tyre design can be found here; http://www.nhtsa.gov/staticfiles/safercar/pdf/PneumaticTire_HS-810-561.pdf You probably won't want to read all of it, although it's mainly focused at road tyres, it offers a great insight. For a quick reference I remember Rosberg once saying, F1 tyres are constructed of "Nylon and Polyester" woven together, while the belt is almost certainly made primarily of kevlar. Either way, common material choices are outlined in the above text.