Dan Prosser and Andrew Frankel celebrate BMW M's 50th anniversary. Founded in May 1972, the M Division has produced more great performance cars than any other German in-house tuning arm. The 1M, E39 M5, M5 CS and the forthcoming M2 all come under the microscope in this episode. With thanks to JBR Capital (@jbrcapital or jbrcapital.com).