So, I purchased these for a circle track race car. They have been holing up great. Even in hard cornering, the tires still look good and have great tread. My only little down side, was when I was mounting these tires on the new rims, the tires seemed like they didn't want to seat on the rims. I put almost 50psi and normally the tire would pop right on. So, I aired them down, double checked my rim measurements and tire sizes and aired them back up. They eventually popped on the rims, but in 20 years of mounting tires, I haven't seen a tire do this. I still really like the tires and i am ordering more now.