Discussion in 'Bicycle Mechanics and Repairs' started by User, 1 Jul 2008.
700 wheel size, 23/28 is the width of the tyre.
Tubes are usually 20/23 and 25/28 - so see what it says on your tubes before shoving a 20/23mm in a 28 mm tyre - it will work, but you'll be overstretching the rubber - therefore more likely to go bang...
A 28mm will go in a 23mm just, but you might just pinch the tube..
622 wheel size, with the outer diameter of the tyre being in the range 660 - 700ish
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