Originally Posted by
npdion
Question 3: Existing rims have an O.D. of .88 in. Will I have to swap tubes as well if I go to the 1.4?
I'd get new, smaller, tubes. The ones that you have are probably a little too big to work well with a 1.4" tire. They'll work in a pinch (pun intended), but it's kind of hard to cram all that inner tube into the tire carcus while you're installing them. If the tube sticks out under the tire bead anywhere, it'll either blow out or pinch flat.