Originally Posted by
tomato coupe
The reality is that most people riding lightweight carbon wheels (e.g. Enve, Zipp, Campy Bora) are still using rim brakes. Regardless, it's silly to compare disc brake carbon wheels with rim brake aluminum wheels, and then claim there isn't much weight savings with the carbon wheels. You need to either compare rim-to-rim or disc-to-disc.
But they are not comparable because carbon rim brakes are not very good. To compare they must actually be somewhat effectively equal at what they are supposed to do.