Rob M is exactly correct. There is no tread wear warranty. I have 19K on mine and they're shot. I drive mountain roads every day to work, so no surprise. One thing to note; the Conti's are about the softest rubber, and have among the lowest tread wear ratings of any tires for this car. The high point for these tires is that they ride nice with low noise. Personally, I don't care too much about low noise and comfy ride in my Crossfire. Goodbye to the Conti's...I'm getting a set of BFG's installed on Thursday. They have nearly double the tread life rating, better speed and traction ratings, and they're a bit cheaper too.