Lots of it. I just marked my tires (with some dust) and took a 90 degree turn at about 25-30 mph. I have scrub marks almost all the way up the sidewall. About 1/8th of a inch form the rim!. I'm running Dunlop SP9000 205/45/16. According to my "cheapo" tire gauge, I'm running 36 psi in front. Any suggestions?! Joshua Hignight Student Services/Technical Services New Mexico Campus (505) 821-4800