Bicycle Mechanics - univega tires/tubes?
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10-18-11, 03:13 PM
I recently just got another bike; a univega grantech aluminum. Im currently shopping for new tires and tubes for the bike, but being fairly new to the biking scene, im a bit confused on what size tubes i should get. My tires are supposed to be 700 x 23c, but when i went to the store they offered a 40mm valve and a 52mm valve. Im not sure which one im supposed to get... ANY HELP APPRECIATED! :D
10-18-11, 03:56 PM
Longer valve stems are for aero rims, which you probably do not have.
You could take one of the original tubes to the store.
10-18-11, 07:27 PM
Valve stems are made in various lengths to fit rims with different sections. Shallow "box section" rims use a shorter stem than "deep section" aero rims. Unbless you have aero rims, the shorter stem will be the better one.
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