Thread: How much difference between knobbly CX tire & road tire of same size?
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Old 03-22-17 | 03:25 PM
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Dunbar
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From: SoCal

Bikes: Roubaix SL4 Expert , Cervelo S2

Originally Posted by chas58
Wow, that is impressive. Lets see - 13 watts resistance from the GP4000S, and 18 watts from the 4 season at 18mph. I'm impressed you are that sensitive! I can't tell a 5 watt difference when I'm putting out over 200 watts...
Like I said, it's noticeable when you stop pedaling on flat ground. Not when you are pedaling. But thanks for the snark.

25mm@80psi the difference is more like 17 watts worse for a pair of Gatorskins vs the GP4000S II.
Last edited by Dunbar; 03-22-17 at 03:28 PM.
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