The covers are off the all-new BMW 8 Series convertible, showcasing the same elegant design as the new coupe but with the added appeal of being able to take its top off. It'll pack a 4.4-liter twin-turbo V8 producing 523 horsepower (390 kilowatts) and 553 pound-feet (750 Newton-meters). BMW says that's enough to launch from 0-60 miles per hour in 3.8 seconds with a top speed of 155 miles per hour. It's ever so slightly slower than the coupe thanks to the inevitable weight gain associated with rag-top cars, with the 0-62mph time increasing from 3.7 to 3.9 seconds.
The BMW 8 Series Convertible is here after nearly 30 years of waiting. BMW also made several small tweaks to maintain reliability and efficiency, including using a stronger type of aluminum alloy for the block, wire-arc-sprayed iron coatings on the cylinder walls, Grafal-coated pistons, high-flow intake ports, and a viscous damper on the crankshaft.
Each benefits from adaptive sports suspension as standard, although the M850i gets an electronically-controlled locking differential included from the outset - it's an optional extra on the 840d, though.
Since the M850i has been created to slot underneath the M8 Convertible, the auto has been equipped with an assortment of performance features. A driving mode selector can be used to switch from a comfortable driving style to a sportier driving mode.
Just like the 8 Series Coupe, we're expecting to see a full-fat "M" version next year, which should push power up over 600bhp, as well as more prosaic petrol and diesel versions too and the arrival of the 8 Series Gran Coupe.
The four-seater cabriolet has a soft-top roof with fully electric operation, opening and closing at the touch of a button and when traveling at up to 50km/h (31mph). During colder months, you should still be able to drive around with the top down thanks to the neck warmers that are integrated into front headrests. Digital screens serve as the instrument cluster and infotainment hub and on the center console sit the gear lever and a rotary-dial controller. The Coupe, meanwhile, goes for $9,500 less at $111,900.