BMW V12 LMR - Mclaren F1 S70 V12 Engine Factory and Racecar Development

The BMW V12 LM was a racing car built for sports car racing in 1998. The car was built using a combination of WilliamsF1 engineering and construction and a BMW powerplant. The car was a predecessor to the BMW V12 LMR which debuted in 1999. In 1995 McLaren Cars entered sports car racing using their McLaren F1 GTR in grand touring series like the BPR Global GT Series as well as the 24 Hours of Le Mans. The McLaren F1s were powered by a S70 V12, leading to McLaren and BMW signing an agreement to both develop their racing teams with the assistance of BMW Motorsport. This combination was successful in winning the 1995 24 Hours of Le Mans. However, by 1997 the F1 GTRs were no longer competitive against newer breeds of specially homologated supercars from Mercedes-Benz and Porsche. Due to their declining performance, McLaren pulled out of GT racing at the end of 1997. Unwilling to give up so quickly, BMW Motorsport decided to move from grand tourers to Le Mans prototypes, open cockpit racing cars built specifically for racing and requiring no road legality regulations. During the 1997 decline of McLaren, BMW Motorsport announced a deal with WilliamsF1, at the time Formula One constructors champions, which would see Williams constructing the car's chassis and develop its aerodynamics for the 24 Hours of Le Mans. At the same time, BMW Motorsport turned to Schnitzer Motorsport, a long time BMW racing team, to be the factory team running the car, now dubbed the V12 LM. The V12 LMs would use the same S70 V12 as the McLaren F1s, although it would be run in its 5990cc configuration. The chassis incorporated an early use of a raised foot box as well as a front diffuser for better aerodynamics and safety.