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.
3. I tried a 27 x 1.25 tire on one of these rims. Admittedly not a very good tire, but the tire was labeled 85 psi max. When inflating to anything over 70 psi, the tire bead separated from the rim and popped the tube.
If your rims are straight walled and not hooked, then high pressures can do that. Maybe go with lower pressures.
Sheldon Brown notes
"... Many cyclists use slightly wider tires with no problem."
In the end it's your decision though.