When BMW released the Z3 Roadster in 1995, it was an instant hit. This sleek convertible hoped to capitalize on the success of the Mazda MX-5 Miata, which pumped new life into the segment.

What exactly is an M Coupe? Built on the Z3 roadster platform (E36/7 in BMW-speak), the M Coupe is part GT, part sports car, and part station wagon/hatchback. For its fixed roof, BMW designated ...