Front or rear? The M5 is 10 mm wider in the front than non-M cars, so it takes significantly more work to fit the M5 front without also fitting M5 front fenders. The rear of the M5 is identical to the non-M so it fits perfectly without any modification.
Originally Posted by Cattani
How difficult is it to fit an OEM M5 to a pre-LCI 550i you think?
[B]2008 550 - Carbon Black/Black - M-sport, Cold Weather, Premium, NAV, Comfort Access, Logic 7 (LOADED, every option except night vision)
Previous 3 cars (the 550 is my 38th car):
2005 530i - Prem, Sport, NAV
2006 Jeep SRT-8
2003 Infiniti G35 coupe