Originally Posted by
rangie
From Bycyclerollingresistance.com--
Comparing similar tread patterns and puncture protection from the same manufacturer,
Schwalbe Nobby Nic Performance at 25psi-- 30.8 watts
Schwalbe Jumbo Jim Snakeskin at 8psi-- 38.2 watts
Fat penalty- 14.8 watts for the pair.
Vs fast road tire
Continental GP5000 25mm at 100psi-- 10.7 watts
Fat penalty- 55 watts
55 watts is an embarrassingly large percentage of my power output.