Originally Posted by Peterpan1

I'm not sure it makes all that much sense to have wider tires if you have more weight on the back. If the tires are well pumped up the depression is pretty minimal, so a wider tire does not really spread out and take it all that much better. I weight in the 250 range at about the time I checked for bike geometry reasons the tire deflection, and it was about 1 mm with proper inflation, not even worth considering. Of course it can become an issue on soft riding surfaces or when tires are deflated for riding on soft surfaces.

I ride identical tires front and back, but it is more some kind of aesthetic thing, than it really making sense. I don't have a quality folding tire available locally, and I carry a different brand spare, but I would be so happy to have a spare when I needed it, I wouldn't really worry about it.