Thread: rim - tire?
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Old June 30th 18, 05:43 PM posted to rec.bicycles.tech
Emanuel Berg[_2_]
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Default rim - tire?

Frank Krygowski wrote:

Here's an article on how to measure rims, assuming no markings.

https://www.sheldonbrown.com/rim-sizing.html


What does this mean:

... then dividing by pi (3.142) the
diameter is 518.5mm. 16mm additional (twice
the depth of the well) gives 534 mm, but
the bead seat diameter is be about 10 mm
smaller, and this is a 520 mm rim.

Why not stop at 518.5mm?

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