Successor to the race proven (E9) 3.0CS/CSi high-performance sports coupes, the 6-series was introduced in August 1976. More forgiving than its predecessors, it utilised a modified version of the (E12) 5-series saloon platform equipped with all-round independent suspension (coil and wishbone front, trailing-arm rear) and powerful disc brakes. A natural rival to the 928 and XJS, the four-seater 6-series proved more capacious than the Porsche and sportier than the Jaguar. Immediately recognisable thanks to its distinctive 'shark nose' frontal styling and thin pillared glasshouse the model boasted real road presence. An impression backed up by the various versions of BMW's mighty M30, straight-six engine fitted throughout the range. Created by BMW's Motorsport Division, the flagship M635CSi debuted at the 1983 Frankfurt Motor Show. Sharing its 3453cc DOHC powerplant with the mighty M1 supercar, it also benefited from a close-ratio five-speed manual gearbox, limited slip differential, improved suspension and heavy-duty disc brakes. With some 286bhp and 262lbft on tap, it was reputedly capable of 0-60mph in 6.2 seconds and 158mph. Only in production for six years, a mere 5,855 are thought to have been made (with RHD assembly supposedly accounting for just 524 cars).
Dating from 1986, this manual right hand drive example is finished in black with cream leather upholstery. Boasting all the usual refinements associated with the model it features air conditioning, electric sunroof, windows and mirrors and is said by the owner to be in "very good overall" condition and to "drive as it should". Documentation comprises a Swansea V5C, MOT certificate expiring November 2008 and extensive service history file.