New BMW M5 vs BMW S1000RR superbike

A car as special as the new BMW M5 requires a test drive with a difference. So with that in mind we took it along to Cadwell Park's wet track to see how it compares to BMW's fastest super bike to see which is fastest.

The new M5 is powered by a 4.4-litre twin-turbo V8, producing 552bhp and a 0-60mph time of 4.4 seconds. And we've already decided it's a five-star car.

But with a starting price of £12,250, the BMW S1000RR is a fraction of the M5's £73k price tag. It has a dry weight of just 178kg and produces 193bhp from its 999cc engine - that's a terrifying 925bhp per tonne -- can go from 0-60mph in just 2.9 seconds and has a top speed of 190mph. In other words, it's very, very fast.

Watch the video to find out which one wins.