Gordon Murray, who had previously worked with Rosche during their time at Brabham in the early 1980s, met Rosche after the 1990 German Grand Prix. When his plans to develop an engine with Honda fell through, Murray turned to BMW Motorsport for their services. This led to Rosche being tasked with the development of an engine for the McLaren F1. The goal originally demanded by Murray was a 4.5-litre V10 or V12 producing 550 bhp, with a maximum 600mm block length and 250 kg, including all the ancillaries, the exhaust and silencer. The development of this engine started with a completely new design, taking a few components from the M70; the eventual result was the &lt;a href="BMW%20M70"&gt;S70/2&lt;/a&gt;. This engine exceeded its goal at 627 bhp; however, it exceeded the maximum weight by 16 kg. In the version used for racing, the F1 GTR, this engine won the 1995 24 Hours of Le Mans; later, it also won this title in 1999 with the V12 LMR.