2021 BMW M4 Convertible spy shots: Performance with the top down

BMW unveiled a new M4 in September and now we have spy shots of the car's convertible variant. The M4 coupe is due in showrooms next March, which is when BMW's new 4-Series Convertible is set to arrive. This M4 Convertible should arrive shortly thereafter. We know this latest prototype is for the M4 Convertible because of the aggressive front...