Originally Posted by M3Fool
E90 does not come with a CF roof...... Not sure if that is even possible and maintain structural integrity of the 4 door. Anyone???
The roof is just a skin, and does not affect structural intergity greatly.
The structures under the roof skin are the load-bearing/dispersing components that give the body strength. Should you be so driven, there is a company(es) that make a carbon roof for the E90.