Quote Originally Posted by cakM3 View Post
I gave Botond my Performance M3 cross drilled rotors and he's using them with his wilwood kit. No issues...
Thank you cakM3. From my research, it looks like front and rear are designed for factory M3 rotor dimensions. Front 325x28mm and rear 328x20mm. The only problem I am facing at the moment is the parking brake drum size that you guys don't have to deal with. My 325 parking brake drum is 160mm and 330/M3 is 185/186mm.