With an estimated curb weight of 5,530 pounds, the new M5 Touring is one of the heaviest new cars that money can buy. BMW wants to give the Audi RS6 Avant rival a sense of lightness by throwing a bunch of carbon fiber upgrades at the super wagon. They're available as M Performance Parts, so you won't find them in the regular online configurator. You'll have to visit a dealer to choose the goodies for your build.
