Anybody know where I can find data on normal street-tire friction coefficients on dry asphalt? I'd like both the static, and the kinetic coefficients. If not, can somebody give me a range of reasonable values? While I'm at it... What about racing slicks on asphalt? I found one source that said the static friction coefficient of a tire on concrete is about 1. But, it didn't say what kind of tire, didn't give me the kinetic coefficient, it's on concrete, and it seems too high.