BMW is showing extended use of its carbon fiber roof technology at this week’s Frankfurt Auto Show. First introduced on the E92 M3, the carbon fiber roof is now also used on the M5. Weight of the roof is around 11 pounds, or about half of a steel roof. Weight savings compared to an aluminum roof is about 25 percent.
The epoxy-based system is manufactured at BMW’s plant in Landshut, Germany, which specializes in CFK/CFRP production. The M5 uses the technology and the manufacturing process from the F13 M6.
The M5 is 11 pounds lighter than its predecessor.