Word has it that BMW is working on some serious stoppers for its M5. According to Bimmerfile, Dr. Herbert Diess, a member of the BMW board of management, has confirmed that the company is currently testing carbon ceramic discs for the M5 and upcoming M6. Brake supplier Brembo has teamed up with SGL Carbon for a joint venture to manufacture the discs, and Brembo is already responsible for bits like the multi-piston calipers already at work on the 2012 M5. Funk Flex Find Flex On Google+