Background
There had been expensive, limited-edition M-Series models before the M3 but it was the latter that brought BMW's premier performance brand within the reach of less wealthy enthusiasts.
The M3 resulted from BMW's need for a car suitable for Group A racing. By this time (the early 1980s) BMW's single-overhead-cam slant-four engine would have been hopelessly outclassed on the racetrack so the required power increase was achieved by bolting on a 16-valve cylinder head. Bored out to 93.4mm, the Bosch fuel-injected M3 motor displaced 2,302cc and produced a class-leading 200bhp.
Although it looked pretty much like a standard E30 3-Series from a distance, the M3 shared only the bonnet with its less-exotic sibling.
Necessary chassis improvements included lowered and stiffened suspension, wider wheels, five-stud hubs, ventilated front brake discs, ABS and a limited-slip differential.
The gearbox was a five-speed close-ratio Getrag. The M3 debuted at the Frankfurt Motor Show in September 1985 with deliveries of this exclusively left-hand drive model commencing a little over one year later.








