Originally Posted by
Yoshi
Ultimately the answer to your question is that aerodynamics are more important in track racing than weight. Road and mountain bike racing have different requirements. I do admit to being surprised at how light some MTB wheels are but I don't know much about MTBs so I can't really comment there.
It's like comparing time trial wheels to climbing wheels, and asking why TT wheels are heavier.
Ya, that makes sense. I guess it's just the comparison to mtb wheels that's most surprising. Maybe the higher volume tires take stress off the wheels themselves...