for me tony, there prety good. no problems yet. when they put the tire on, make sure it's on right. when i had the guy do it for me, it was kinda worped. he had to set it right. just follow the line near the rim line. if the line disappers then the tire is not set in right, it needs to be set in right. a full circle. it was kinda tricky for the guy that did both my tires. i had to watch them do it so they didn't scratch the shit out of my rims..