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Old 06-16-17, 01:21 PM
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Originally Posted by Scooty Puff Jr View Post
higher pressure normally make for a better rolling tire.
Higher pressures decrease the amount that a tire deforms as it rolls, which is what results in less hysteresis loss. Wider tires can't be pumped as high, but they also deform less at a given pressure, so they don't *need* to be pumped as high to achieve similarly low losses. (And since they're squishier at the same amount of hysteresis loss, they work better as suspension, so they actually end up with lower rolling resistance as surfaces get rougher.)

You still end up with bigger aero profile, but this is pretty darn insignificant at the speeds people tend to ride their hybrids.

Overall it's usually pretty close to a wash. For paved speed, the really important thing with road tires is getting good high-performance road tires, and configuring them reasonably. Whether they're 25mm or 35mm doesn't make a ton of difference.
(The trick is finding good wide high-performance road tires. That market is very small, which is why several people have mentioned Compass; they're about the only brand with a relatively complete-ish lineup.)
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