BMW 6 Series Lineup gets xDrive All-Wheel-Drive option image

First announced this summer, the BMW 650i is now available for order in the States with the option of the xDrive all-wheel drive system on both the Coupe and Convertible body styles.

The 2012 BMW 650i xDrive Coupe starts at $86,000, while the 2012 BMW 650i xDrive Convertible starts at $93,500. Both models cost $3,000 more than their rear-wheel-drive counterparts.

BMW says the all-wheel-drive versions of the 6-series are faster than the rear-drive cars. How much? A tenth of a second faster to 60 mph for the convertible and two-tenths faster in the coupe .

The eight-cylinder power plant in the BMW 650i Convertible produces 300 kW/407 hp.

At 4,894 millimetres (192.6 in.) in length, the new BMW 6 Series Convertible is 74 millimetres (2.9 in.) longer than its predecessor. Its similarly extended wheelbase now stretches to 2,855 millimetres (112.4 in.).[more about the 6 series]

BMW’s decision to offer xDrive on one of its sportier models makes sense when you think about it. Audi currently offers its quattro all-wheel drive on all of its models — including the similar A5 coupe and cabriolet — so it would be smart of BMW to spread its all-wheel drive system throughout the model range.