BMW must be on the verge of introducing the M4 Convertible because this prototype barely had any camouflage on it. In fact, the swirly disguise covering the rear bumper, the lower half of the trunk lid, and a section of the rear fenders is not actually hiding anything that we haven’t seen before. If you’re wondering about the paint, it’s Isle of Man Green, the launch color of the mechanically related M3 Sedan.
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