This is an old video. It happend in Russia. The RS4 at the video time had a power kit of 550Hp from MTM (nowadays he´s running 600hp on that engine) and the M5 is running with a bit more than 400hp. The M5 owner made some mods to the exhaust. He posts on the M5 board and he is a passionate guy for speed and cars in general, we can see that he is also crazy and insane to drive like that.

J.Seven