That must have been your S3? When my E39 M5 was still stock, it weighed 3921 lbs on an accurate set of corner balance scales with a 1/2 tank of fuel and maybe 5lbs of extra stuff in the trunk.When we were at Atco in December we weighed my E39 M5 and my recollection is that we came up with 4025 lbs. This was with a half tank of gas and no driver. I would think that the E39 is a tad lighter than the E60.
I believe actually weighing your car is the only way you are going to get a real world weight figure for your E60. I'm with Unfoundhorsepower on this one:hihi: