Background
Paul Rosche was not the sort of engineer to sit on his laurels. He was known by his peers and colleagues as “Nocken-Paule” (nocken being the German for camshaft), such was his total immersion in his craft. That craft was very specifically making BMWs go faster for longer.
Having joined BMW straight from university in 1957, Rosche’s CV was littered with automotive milestones. In 1969, he designed the 2-litre turbo engine with which BMW won the European Touring Car Championship. In 1975 he joined BMW Motorsport GmbH to head up the design of the BMW M1 production and racing engines. By the early 80’s he was leading BMW’s assault on Formula 1. The Brabham BMW debuted at the start of the 1982 season and just 630 days later it carried Nelson Piquet to the World Championship. By 1987 the diminutive turbo unit had nine grand prix wins to its name and its potential remained undimmed. When quizzed about the F1 engine’s maximum power output, Rosche declared: “It must have been around 1,400 hp; we don’t know for sure because the dyno didn’t go beyond 1,280 hp.”
So, when BMW CEO Eberhard Kuenheim left Rosche with a seemingly casual request, he clearly knew what he was doing. In a “just one more thing” moment worthy of Frank Columbo, Kuenheim turned to Roche as he was concluding a visit to Motorsport GmbH in Munich and simply said “Mr. Rosche, we need a sporty engine for the 3 Series.” And so, the die was very nonchalantly cast.
The resulting BMW M3 that debuted at the 1985 Frankfurt Motor Show bore all the diligent hallmarks of Rosche’s obsessive genius. To the layperson it looked for all the world like an E30 3-Series with a body kit and some nice wheels. It was in fact a fully fledged “racing car for the road” courtesy of Deutsche Tourenwagen Meisterschaft (DTM) and Group A Touring homologation regulations. For a race car to qualify for Group A campaigns at least 5,000 production models had to be built in the space of twelve consecutive months. Thank you DTM!
It inherited just the doors and roof from the standard E30’s shell and featured a 2.3 litre four cylinder engine with two-thirds of an M1’s four valve head grafted on. The essence of the machine lay in its 200bhp punting along a mere 1,200 kg of kerb weight. The results were writ large in the perpetual grins of all who drove the car.
By 2000, the M3 had cemented itself a fearsome reputation as well as a worldwide following as the car appeared in its third, E46-based iteration. The M3 now featured six-cylinder propulsion in the form of the esteemed S54B32 3.2-litre unit. Now boasting a mighty 343 bhp and a stratospheric 8,000 rpm redline, BMW had emphatically doubled down on the M3 concept. Rosche retired a year before the launch of the E46 M3, but something tells us he would have approved wholeheartedly.







