The 615s have really overcome the heat problem of the 215s, and the new Kooks are better and cheaper than the MXs. Kuhmo is really out of the running now. Last year they were a serious competitior, but both high-end and low-end tires came and took their market share. Did you read the GRM article on auto-x tires?


-Philip Maynard '95 Contour [71 STS | Track Whore] '97 Miata [71 ES | Boulevard Pimp] 2006 autocross results