As Patrickt, said for most street driving, I use my tires as the limiting factory. Easiest & Cheapest to change. Back in the Day, running for a championship, Even Auto-xing in stock class you used a set of tires just for that propose. To tell you how long ago that was the trick tires were (Yoko's 008 RS 2's
). Just wondering Mike, is there a reason you went to a two disc set-up??? Cheers TommyRot.