The M5 has proven to be an incredible performer on the track, and seems as though it's able to shed it's weight as soon as you drive the car quickly. The chassis feels tremendously balanced, but we did find that the brakes will fade after some 20-30 minute sessions around Autobahn here in Chicago.
Our F10 was able to break the 1:40 mark around Autobahn's south course- easily matching many modified E9x M3s.