The Convertible variant of the second-generation BMW M4 Coupé has completed its final rounds of testing including the mandatory Nürburgring pilgrimage and is now here for the public to have a first look. The photos here feature the Competition variant with M xDrive AWD system, and it is unclear at the moment if there are any more variants in the pipeline. Anyway, the production will begin in July 2021 at BMW’s plant in Dingolfing, Germany.
Besides the grille, the other big difference between the new model and the predecessor is the roof, or the lack of it. Replacing the hardtop is a softtop, which of course, offers weight benefits. BMW claims the softtop to be 40% lighter compared to the predecessor’s retractable hardtop. The other advantage is that the softtop takes up less space in the rear of the car. When driving with the top down, the boot is claimed to offer 300 litres of luggage space — an increase of 80 litres, and when the top is up, the capacity increases to 385 litres. The softtop can be operated at speeds of up to 50 km/h (31 mph) and it takes around 18 seconds. The Comfort Access option enables the roof to be operated remotely.
Also, to compensate for being a Convertible, the chassis has been enhanced with bracing elements to increase the longitudinal and torsional stiffness of the body structure. More details here. As a result, the Convertible weighs 145 kg (320 lbs) (unladen) more compared to the M4 Competition Coupe M xDrive (1,920 kg vs 1,775 kg/4,233 lbs vs 3,913 lbs). However, the M Race Track Package can cut down the weight by 25 kg (55 lbs), thanks to M Carbon ceramic brakes, even lighter M light-alloy wheels, M Carbon front bucket seats, and a few more carbon fibre interior bits. As standard, the car rides on forged M light-alloy wheels measuring 19-inch at the front and 20-inch at the rear.
The rest of the features remain the same, obviously, including the displays inside, and the Adaptive M suspension and Active M Differential underneath.
The 3.0-litre (2,993 cc) in-line 6-cylinder twin-turbo petrol engine pumps out the same 375 kW (510 metric hp) and 650 Nm (479 lb-ft) of torque. An 8-speed M Steptronic transmission drives all four wheels via the M xDrive AWD system. BMW claims a 0-100 km/h (62 mph) sprint time of 3.7 seconds, which is 0.2 seconds slower than the xDrive Coupe. The 250 km/h (155 mph) limited top speed can be increased to 280 km/h (174 mph) for extra money.