I think there might be something wrong with the tire wear for the 90's DTM version. In the league I'm racing, we have the Sierra 90's DTM vs. BMW E30 Gr.A 92 vs. Mercedes 190E and Sierra's tires seem to last much longer than the other cars, giving it a bit of an unfair advantage. We're running 50% damage and 125% tire wear in server settings btw.