Drivetrain Mods: Nice DieHard Platinum battery (size 65) I have a CPE Dual Cat-Back Exhaust System waiting in the garage. Suspension Mods: Stock Wheels and Tires: Summer: Stock 18" Spoked Wheels Conti ExtremeContact DWS (good, but getting noisy) Winter: 17x7.5 Silver Painted Sport Edition F2 215/50R17 Dunlop SP Winter Sport M3 (love these!)