Quote:
Originally Posted by Bicycle Bob
I was surprised to see that RR goes up on wet roads, even though the coefficient of friction goes down. Any moisture is bad, not just puddles.
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Think about it, though. The increase from wet roads isn't really a change in the rolling resistance of the tire, it's because energy is used to push the water out of the way. You'd get the same (or similar, this is just back-of-the-envelope) increase if you had a non-rotating tire sliding on a perfectly frictionless surface.