BMW M4 Convertible
The BMW M4 is a high-performance version of the BMW 4 Series coupes and convertibles developed by BMW’s motorsport division, BMW M, and marketed since 2014.
As part of the renumbering that splits the 3 Series coupé and convertible models into the 4 Series, the M4 replaced the BMW M3 coupé and convertible models. Upgrades over the standard BMW 4 Series include an upgraded engine, suspension, exhaust system, brakes and weight reduction measures including increased use of carbon fibre, such as on the roof of the car.
First generation (F82/F83; 2014)
The convertible variant of the M4 was announced along with its coupe sibling, also internally known as F82 or F83 M4. It shares almost everything with the coupé version, but weighs more due to its folding metal roof. The convertible weighs 1,750 kg (3,858 lb) (manual), 1,691 kg (3,728 lb) (M-DCT). The three-piece retractable hardtop folds in 20 seconds. The only significant difference between the two is the weight due to its retractable hardtop. Like its hardtop counterpart, the F83 M4 uses carbon fibre reinforced plastic to lighten and stiffen the car.
Because of its extra weight it accelerates slower, taking it 0.3 seconds longer to 100 km/h (62 mph); 4.6 seconds with the manual and 4.3 seconds with the M-DCT transmission. The dynamic differences between the two variants are marginally small.