So, here are the dimensions and clearance of the existing tire.


Width between stays (already crimped): 1.50" (38 mm)
Tire width: 1.11" (28 mm)
Clearance per side: 0.20" (5 mm)



So, the 38 mm Barlow Pass is out, the 32 mm (1 1/4") Jon Pass sounds like it'll fit (with some risk of rubbing).

It occurred to me, if I use a wider tire, it will also have a higher profile. This means the wheel's radius will increase (distance from the wheel's center to the point where the tire is widest increases). This means the stays will be a little more narrow at that new distance. The crimp was made so as to provide roughly parallel inner edges. It is not perfectly parallel but is not as tapered as the stays would have been had they not been crimped.


So, guys, how much clearance is enough? Should I just leave well enough alone?