All in all it makes sense :
- A range of "classical" sedans turned into supercars (odd numbers) : M5, little sister M3 (and I hope...M7). No carbon fiber roof.
- A range of coupé supercars placed just above the respective "classical" models (even numbers) : M2, M4 & M4GC, M6 & M6GC. Common coupé design cues, issued from the 6 Coupé. Carbon fiber roof at least for M4 and M6 (amongst other special features?)
Last edited by advantage20; 10-29-2011 at 04:33 PM.