Originally Posted by
DieselDan
Really? You sure? Your big beefy MTB tires may seem to be as bike as my skinny road bike tires, but your have tons more rolling resistance ripping your precieved efficiency away.
If you think the difference in wheel diameters isn't much, learn to use pi.
Stand your road bike wheel and tire next to your mountain bike wheel and tire (assuming it's got knobbies) and then tell me that they're not close to the same height.
Do I need to take pics of mine, or what?