You want some really tough tires to get on and off? Try Forte Gotham 26x1.75, my commuter tires. They're heavy but I've never had a flat with them, so I'll keep them until they wear out. However, when I want to swap over to knobbies to go mountain biking and then put the Gothams back on, it is a new adventure in pain and cursing each time. I can get the knobbies on and off with my bare hands but those Gothams almost seem too small for the rims, as if they're really 25.5" diameter instead of 26"!