Quote Originally Posted by Car54 View Post
Woody,

The non-BMW category's threshold for R-comp vs. Street tire is 210 treadwear. That puts most extreme summer tires into R-comp class.

XS - Non-BMW's w/ 210+ treadwear rating tires.

XR - Non-BMW's w/ no tire restrictions.
Quote Originally Posted by woodym3 View Post
Wow. When where did that crazy rule come from?
lol, sorry...didn't see the responses before I posted mine