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Discussion Starter · #1 ·
Ok, in reading posts I hear people talking about there being some kind of relationship between rim size/width and the width of cross tire they can fit on the bike. Can someone please explain this to me? I thought a 700c wheel was a 700c wheel, end of story...guess not?
 

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to be honest i've been riding mtb trails on my cx bike, 35c on a 18mm iner width rim. never had a problem with tire rolling off the rim.

edit: the tire is labeled 40c (ritchey trailmix), but it measures 35c on that rim.
 
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