Well, I tried to run 20 psi down the track the other night on regular Kumho street tires and I couldn't grip in 3rd gear!! At 15 psi, I had no problem.
I may have to try these out (or somethign comparable) just to stay on the track.
_____________________________________ Jason ESi-T
04' BMW 325Ci 91' Nissan 240SX 98' Eagle Talon ESi (sold)