I got the car with these awesome rotiforms, but fronts are only 8.5" wide so it limited what I wanted. Currently for track I run re71r with 245/275 front rear combo on 18" rim. I have to run 18s due to brake kit, or I'd go back to 17s. I went back to stock sway bars as stiffening the front gave me too much understeer. I'm looking to go with a square 10.5" and adjust sway bars as needed. Personally, I like having a solid front end keeping the rear semi loose for this track, the extra rotation really helps except two turns which messes with high speed braking where she wants to step out too much when you unload the rear. I love my re71r except I wear out the shoulders quickly with more camber compared to say r888r. But these give me great speed, predictable, and wear very well with out getting overly greasy when hot.