Just out of curiosity I converted millimeters to inches and 700mm=27.56" and 25mm=0.98" which is basically 27 x 1. So, I guess what my question boils down to is will a 27 x 1" (700 x 25c) tire fit and work safely on a rim that held a 27 x 1 1/8" tire? Does the 1/8th inch extra on the tire make such a distinct difference that you couldn't use something 0.125 inches smaller? Or will I just have a harder time getting the tire on, but once it's on it's good to go and safe to ride?