A while back, there was a thread speculating about the true weight of the RS6 (I mentioned that Edmunds.com states RS6 weight as 4050).
Today I had a chance to weigh the beast at a scale at Daytona Int'l Speedway - and the verdict was *4300* lbs, including 3/4 tank of gas, and all of the normal items on the car (e.g. spare tire). My car is stock (e.g. stock wheels, brakes, exhaust).