Originally Posted by WW Ronin
I'm jealous. When I had Woody make my wheels, I stayed with the 17" rear which was a mistake as I am primarily interested in dirt. Oh well. Maybe I'll have him make me a 18" rear that I can use for dirt then switch my 17" to a more road biased tire. I wonder if I can switch out the 17" to 18" and back with the same length chain? I guess it would also depend on if I changed the size of the rear sprocket. Someone must have tried this. I guess I'll ask Woody if I ever get around to it.
Dan, I have the stock 16/42 with the 2.5" x 18 and it's fine. I do a fair bit of gnarly stuff and honestly can't tell the difference in gearing. The narrow tyre (130) is a hoot as it allows a lot more throttle steering, at the expense of shorter tire life I fear.
I can't really qualify that, however, as I changed brands of tyre at the same time.
I think if I was doing it again I would opt for 3.5 x 18.