Cooper won't stand by their warranty!!!!!
I purchased a set of CS4's last summer and didn't even get 20k on them. they were rotated and showed even wear (no mechanical or alignment issues) and went back to the dealer who installed them. They contacted their distributor about honoring the 80k warranty I was told they had.......and low and behold the distributor would not honor the warranty at all. I will definately never again buy a Cooper Tire for my cars or 03 Silverado Dually... I said NEVER and I'm telling my friends and family to do the same!!!!