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Tarmac grip level

R Soul

1000RPM
Apr 19, 2009
1,013
214
37
You can change grip by editing the .tdf file the track folder in GameData\Locations. Bear in mind that BTB will overwrite this when you export unless you tell it not to do such a thing.

I don't know exactly what the numbers mean. Note that as well as basic grip levels at the start of the file, there are some [feedback] sections for each material.