2008 BMW 6 Series Subtle changes distinguish the 2008 BMW premium performance BMW 650i Coupe, and BMW 650i Convertible from last year’s model. Both editions come with a 360 horsepower, 4.8-liter Valvetronic V-8, backed by one of three heavy-duty 6-speed transmissions: conventional manual, STEPTRONIC automatic or Sequential Manual Gearbox. New for 2007 is an even softer, more supple Pearl leather upholstery for the 2+2 cockpit. Standard 6 Series wheel/tire 2008 BMW 6 Series 2008bmwseries in Public bookmarkswith 20086autoautomotivebmwnewsseries