[scottj]

The longest I've run a set on the street is 2000 miles. Based on wear I could probably go 8000 miles. I put a new set on for every track event so I'll probably never know. I'm only providing my experiences from 15 years of running them, I'm not saying that I recommend them. I would ask what is the perceived advantage over a street tire? One thing about these tire is that they don't give much warning near the limit of grip; all the feedback comes through feel. They don't squeal like a street tire near the limit and the limit it very high. One second your on a rail and the next you could be traveling backwards. Because of the high power to weight ratio with many of these cars, many would say that they are "safer" with higher grip. I don't really buy that. I run track events so I have these tires coming out of my ears, otherwise I'd run a performance street tire.