Originally Posted by
UBUvelo
bump de bump, yeah....but how does this combo on a road bike (if meant for climbing, thus, necessarily, descending!) not help? i realize geometry is affected a bit (how much?), but i would think that if the 69er idea works for some bikes, why not the 700-650er? adust the saddle, the bars a bit....
has anyone done this for road? not all that curious about fixie/cool looks. this is about performance.

Do you see anyone using that wheel setup in a professional racing setting? No. Not on a MTB not on a road bike. This should tell you something. If the R&D departments at bike manufacturers around the world see no use in it then it obviously isnt going to help your performance.