Originally Posted by bassicfun
I have ran both, noticable difference, mostly in the stretch/bind of the sidewall. But if you can get a GOOD (light) set of 9s, that will not be the reason you win or lose... if budget isn't a concern, I'd go with 9.5s, just a smaller market for them compared to 9s.
Well I have 2 sets of 9.5" RPF-1s from my current SM car. Guess ill stick with those for next year