2023 BMW Alpina B8 Gran Coupe Exterior and Dimensions

The Alpina B8 Gran Coupe shares its body with other Gran Coupes, but there's quite a bit more individuality. The distinctive 21-inch Alpina alloy wheels and blue brake calipers mark it out as something special. These wheels can be exchanged for 20-inch items wearing all-season tires if you wish. Compared to a normal GC, there are other differences too. The air intakes in the front bumper are larger, and at the rear, you'll notice a black diffuser, Alpina B8 badging, and a subtle color-coded decklid spoiler. Unlike the round items on an M8 GC, the oval outlets here identify the signature Alpina exhaust system. And where the non-Alpina model has a fixed carbon-fiber roof, the B8 has a panoramic power-sliding and tilting moonroof with a sunshade by default; the carbon roof is still optionally available. Most exterior trim, save for the illuminated grille, gets the blacked-out Shadowline treatment, but you can opt the Chrome Line trim back in if you prefer it.

With a length of 200.5 inches, a width of 76.1 inches (84.1 with the mirrors), and a height of 56 inches, the BMW Alpina B8 Gran Coupe's dimensions are substantial, but on par with the M8 GC on which it's based - the only difference is the M8 GC is almost half an inch longer.

The Alpina B8's svelte body is stretched over a 119-inch wheelbase and, thanks to the xDrive drivetrain, extensive spec sheet, and substantial footprint, it weighs in at a considerable 4,831 pounds. Its size and weight are in the same ballpark as rivals such as the Audi RS7, and around 350 lbs more than the standard M8 GC.