Originally Posted by E90ice
It problably won't beat the M5 on the track. I most cases it's how the car is built from ground up...not just hp. But who knows?
If the RS4 and M3 are equals on a track, why wouldnt the RS6 with a lot more power be faster than the M5?
The M5 isn't all that great, at all.. Outside of the motor, it's pretty blah..
Also, look how easy it is to add additional power to the 335i, you could get 600whp with nothing more than a tune and a couple bolt-ons.
I realize you cant compare a modified car to a stock car, but even in stock form I'm 99.99999% sure the RS6 will be faster on a track than the current M5. If you into modding, there's no comparison, the factory turbo car will always have the advantage.