Originally Posted by roadpig2001
I have some old diacomp calipers ,they seem to have about 7mm more clearance than shimanos. I should be ok on tire clearance. I checked Shedon Browns site, it seems to be vary conservative on what you can mount ,on a 13mm inside width (700x25) ,dont cross bikes use standard 700c rims, like Mvaic open pros ? Or are they using a hybrid type rim?
Cross bikes use wider rims - usually 17mm
I have some 13mm rims that I have put 700x25C tires on. You can maybe stretch that to 700x28C.
Also check the chain stays for clearance. I have a bike with "long" reach calipers (actually they are "standard" reach 47mm-57mm). There is plenty of clearance for a big tire at the brake calipers but I am limited to 700x35C because of clearance at the chain stays.