Originally Posted by synclastica_86
Okay... so let's make it clear once and for all. Apart form the weight savings that can be offset by one less happy meal from Mcdonnels, does the CF roof give any performance advantage over a steel roof?
Is it possible to make a CF roof for the E90 or E93? See, since the E93 does not rely the roof for any structual strength isn't it better to make it as light as possible?
The most beneficial gain is a lower centre of gravity, which will improve handling.
The M3 sedan is quite a bit taller than the coupe, so a CF roof probably wouldn't quite have the effect as it does on the coupe...