Hmm. I've been saving for a 335 performance rear set up.
But I may keep my 328 setup and stick some fat 3.5 inchers for the twin tip.
Cool thread! I think quads would be best at no bigger than 3.5.
Eibach Pro kit|Bilstein Sport Shocks|M3 Edition Grilles|Painted Reflectors|Matte Black Vinyl Window Trim|CF Performance Spoiler|35% Tint|19" Satin Black Avant Garde M359|Lux H8 V3|OEM Aero Lip|M3 Side Skirts|M3 Mirrors with Performance CF caps|LCI Tails|M-tech Rear|Duke Dynamics CF Performance Diffuser|Cyba 4.0 Black Chrome