Thread: Smaller wheel sizes.
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Old 02-26-11 | 06:04 AM
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Bob Dopolina
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Originally Posted by LesterOfPuppets
It's hard to say how the seller came up with the 25" wheel number. 700c rims are just a little over 25" in diameter, so maybe that's what it is. All wheel sizes are pretty much jibberish because they consider rim and tire in the size. See this chart for reference. (oooh, forgot that road 24" was different from MTB 24") Just the wide variety of 26" rim sizes gives you an idea of how little most wheel size quotes mean. And there are at least four different 24" rim sizes.
That's why the old designations are no longer used in the industry. All tire/rim/tubes are designated by the ETRTO numbers (example: 622 x 13). Those are very specific and refer to actual measurements.
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