[Video] BMW M850i v Audi RS4: Rolling Race and Brake Test

It’s time for the M850i & RS4 to go head-to-head! The BMW M850i belonged to Carwow’s Mat, and it was going up against his old RS4 long-termer! The question is, which would come out on top? And if you could only have one, which would it be?! There’s only one way to find out… LET’S RACE!