Originally Posted by
MattTheHat
Using bike calculator a 20 watt (10 per tire) difference with a 170 pound rider putting out 200 watts on the flat looks more like a .7 MPH difference.
Except I listed 11 mph to 13 mph and not 200 watts in the first example. In the second, my CdA is under 0.150 m^2.
I have no idea what your assumptions were.
The bottom line....a 50% reduction in Crr would be huge. At 200 watts, the reduction would be more like 40 watts down to 20 watts. OP formulated the question very poorly