Originally Posted by
jrickards
700x32c = 2155mm diameter
700x23c = 2099mm diameter
2155/2099 = 1.03
If you switch to the 23, you have to pedal 3% faster to go the same speed, so you're probably going to go slower. Physics says, you know.
But the flipside is you effectively reduce your gearing a little, so climbing hills will be 3% easier
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