Originally Posted by DocJohn
Also, one thing that is nice about the MT M3...it is lighter. The scales seem to suggest that it is 90 LBS lighter than the DCT. I would still pick a dct for the track, but in a car that is marginally too heavy to start with, I like the idea that I don't have those 90 lbs ahead of the midline of the car!
The difference in weight between the two transmissions is no where near 90#, more like 40 (don't remember the exact number).
I had an '09 6mt sunroof car that weighed 30# more than my '11 DCT/comp/carbon roof (other equipment was the same). I was really surprised that the DCT car was lighter, obviously the carbon roof helps but wow. This is with both cars 100% stock, full fuel, on the same corner scales. The point is, the weight penalty for the DCT is low enough to not be a consideration when choosing which transmission you want.
The most interesting thing to me is that the '11 up cars seem quicker than the earlier cars (regardless of transmission).