Originally Posted by Pearlwhitem3
Pm please for E90 rear diffuser and spoiler. Also could you shed some light on the E90 carbon fiber roof? Is this DOT approved? Is it as strong if not stronger than factory roof? Thank you in advance.
PM sent. The CF roof is just as strong, if not stronger than the OEM roof. If you want maximum rigidity, you should definitely consider the optional Carbon Kevlar inner lining.