Watch: BMW M4, Toyota Supra And Audi Racing In ... clad in Michelin Pilot Sport Cup 2 tires. The M4 GTS also sits on gold-painted brake calipers with carbon ceramic discs at all four corners.

is a tremendous quarter-mile elapsed time, and both of them are stupidly fast from a rolling start over the half mile as well ...

So the M4 GTS is more than just a slightly irrelevant ... The carbon bonnet, carbon-ceramic brakes, titanium exhaust and the loss of rear seats and other lightweight bits result in a kerb weight ...