I'll be running a square setup with Nitto NT01 275/35/18 on a 9.5" wide wheel all around. Never ran these tires before but I've heard many positive things about them from some other track junkies. Best part is that they're dirt cheap at $250 a piece and supposedly wear better than most other R-compounds out there. We shall see. I'll report back after the season's first event in less than a month.
2008 ///M3 Coupe, AW/FR ext, M-DCT (gone)