Originally Posted by
dw01
To answer those that asked, there are (4) reasons why I am concerned:
1. I've come across many on-line references tables that indicate 14mm rim width and 32mm (1¼ inch) are not really compatible. In fact,
https://www.betterbybicycle.com/2014...of-wheels.html states "The ideal relationship between tyre and rim section is about 1.8 times, but any tyre from 1.4 to 2.2 times should fit – always provided that the bead diameters correspond." The calculates out to 19.6 to 30.8mm tire for a 14mm rim.
Those charts are wrong and unnecessarily conservative. The idea that there is some kind of control issue is overblown and unsubstantiated. Additionally, don’t get hung up on the numbers. A 30.8mm tire is 1.2mm narrower than a 32mm tire. That’s roughly the thickness of a dime. In other words, not much.