DCT adds 44lbs (20kg) vs 6MT according to BMW's literature.
Your car with a full tank (+48lbs) and me in it would weigh about 3780 on those scales. Nowhere near 4000lbs. Of course, "loaded" on an E92 often still means it has a CF roof, which is a 45+lb difference compared to a sunroof
Last edited by Richbot; 09-18-2012 at 11:25 AM.