What size brakes does the E34 M5 have?
All M5s feature larger brakes than their standard E34 counterparts. Those built before May of 1994 utilize 12.4-inch vented front disc brakes and 11.8-inch solid rear disc brakes, though these became vented as of 10/89 production. The update to all M5s in May of 1994 brought even larger front and rear vented discs, now measuring 13.6-inches and 12.8-inches, respectively. Furthermore, the front rotors now featured a new two-piece floating design for better heat dissipation.
