A definitive guide to BMW's high-performance classic coupes, tracking their rising success from 1965 to 1989. After the doldrums of the post-war years, BMW had felt the need for a flagship grand touring coupe. The 507 of the late 1950s and the 3200 CS that replaced it in the early 1960s may not have made much money for the company, but they were a reminder of its aspirations. Then in 1964, a strik...