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Originally Posted by PhilD
You are also more likely to pop a bead with narrow rims.
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If true, I've been under a misapprehension. I thought that narrower rims, within acceptable limits, reduced the chance of popping a bead for two reasons: (1) the rim/tire seating is protected from by the slightly-bulging sidewall, and (2) narrower rim exerts more lateral, inward pressure on the tire where it's seated - i.e., the contact force between the tire and the rim is greater, especially at low pressures.