season. The M12/13 engine won at the 1982 Canadian Grand Prix at the hands of Nelson Piquet; Riccardo Patrese was the team's other driver. The following season, BMW supplied engines to the ATS team; the factory-backed Brabham took four victories on its way to Piquet's championship win. Two more victories came in 1984, and BMW added Arrows to its list of teams who received its engines. In 1985, Piquet's Brabham, who was now teamed with Marc Surer, managed only one win. In 1986, BMW started to supply engines for the new Benetton team, who earned the only win for a BMW engine at the hands of Gerhard Berger. However, the factory-backed effort at Brabham met with little success with the return of Patrese and Derek Warwick. At the end of the 1986 season, BMW announced it would drop out of Formula 1 at the end of the 1987 season. BMW's M12/13 engine, however, continued to be used, because Megatron bought the rights to the engines for the Arrows team. The Ligier team was also supplied with the engine for the 1987 season. Following the 1988 season, turbocharged motors were banned, and Arrows ended its use of the former BMW engine. The BMW M12/13 turbocharged straight-4 engine was famous during its life for being the first Formula 1 engine capable of in racing trim, although it was capable of nearly for qualifying with modification of its boost. This engine had a bore and stroke of x , giving a displacement of 1,499.79 cc. Maximum crankshaft speed was 11,200 rpm. Peak power b.m.e.p. was in the region of 1,000 lbs/sq.in. 1997–2005: Return to Formula One via Le Mans In 1997, BMW announced that it had formed a partnership with Williams Grand Prix Engineering in order to provide V10 engines in 2000. The initial development of this partnership was BMW's sports car effort. Chassis built by Williams powered by a BMW M70 V12 engines were entered by long-time partner team Schnitzer Motorsport. The rather unsuccessful 1998 model was improved, and the efforts culminated in BMW's victory at the 1999 24 Hours of Le Mans with the BMW V12 LMR. Additional success came in the 2000 ALMS series before the cars were retired from racing. Following the win, the second stage of BMW's partnership with Williams began, with BMW developing the powerful E41 V10 for Formula 1. The new Williams-BMW debuted in the 2000