I put these tires on our Z06 before heading off to a regional Corvette club convention WSCC. The OEM Goodyears had worn to the cords on the inside so I had an alignment done reducing negative Canberra to -1.0 degrees from -1.4 and changed toeout to 1/16 of toein. Went to the convention not expecting good results at the autocross event. My wife even commented on the drive that the Z wasn't as responsive on corners as it used to be.
Went up against a field of 13-14 other Z06/GS Vettes and smoked the field in a car I had never autocrossed beforehand (did win some championships in our C5 Z.) These tires went about a second quicker than Kuhmo XS 180 treadwear tires and even faster than some PS2 shod Zs. I would have never expected them to stick that well with a 300 treadwear rating. I think the XS has been officially de-throned. Will definatley repurchase these tires and glad to see USA manufactured I'D on them. Great Job!