From Motor1.com….
The 2021 BMW 4 Series Convertible debuts bringing the new, big-nosed styling to the droptop model. Prices start at $53,100 (before a $995 destination charge). These open-roofed coupes arrive in the United States in March 2021 for the rear-wheel variant and July 2021 with all-wheel drive.
The latest generation of the 4 Series Convertible makes the big switch to using a soft material for its roof, rather than having a folding hardtop like the previous model. The soft-top roof is around 40 percent lighter than the previous panels. During top-down motoring, there is 9.0 cubic feet (255 liters) of trunk space, which is 1.2 cubic feet (34 liters) more than before. Inside, occupants benefit from 0.2 inches of additional headroom when the roof is in place.
