I've got a WR-X, came with a 140 rear tire. Anyone think a 160 will be too wide? I'm looking more for a steeper profile than anything. With the rim being the same width the tire when mounted shouldn't be much wider should it?
You can probably put a 160 on it, but a 150 or 155 would work better. You're probably going to run into chain rub issues. I know that the pros are running 160s, but those bikes have a bit more ooomph than yours.