Quote:
Originally Posted by jamesqf
I find it very surprising that increasing width would decrease rolling resistance. I sure see the opposite effect on the only experiment I can conduct: road bike vs mountain bike. I run a fairly smooth road-type tread on the MB, and inflate them to their max pressure, yet it takes perceptibly more effort to maintain a given speed than with the skinny-tired road bike.
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The problem is apples and oranges:
Did you use the same inflation pressure?
Are the tires otherwise identical?
That's what makes that study so valuable - those things were the same.