BMW's emergence as a manufacturer of fine sporting motor cars can be traced back to the annual Eifelrennen event held at the Nürburgring on 14th June 1936, when Ernst Henne beat a field that included 1½-litre monoposto racing cars driving the prototype of what would become one of the most iconic sports cars of all time – the legendary '328'.

The fact that this overwhelming victory had been achieved only eight years after BMW's establishment as an automobile manufacturer is all the more remarkable.

It had been the acquisition of the Dixi works at Eisenach in 1928 that provided BMW, hitherto a manufacturer of aero engines and motorcycles, with a foothold in car manufacturing.

Dixi's built-under-license version of the Austin Seven was gradually developed and improved, ending up with swing-axle suspension and overhead valves, and then in 1933 came the first true BMW - the six-cylinder 303.

The latter adopted a twin-tube frame and abandoned the rear swing axles in favour of a convention...