My RE71Rs are finally out of tread. I got 197 runs out of them on a variety of surfaces. Contrary to my initial concerns, they held up very well. If you're worried about quick wear, then it is not an issue, at least on my Miata. I am not easy on tires, either. I am going to try the Rival S, but I would not have a problem buying another set of RE71Rs. Joe Bob says, "Check them out."