Does anyone here tour with 32 spoke rims and/or side-pulls? If so, let’s hear from you and relate your experiences—good and bad.

I’m thinking that 40-50 lbs of gear shouldn’t put too much strain on 32 spoke wheels. I weigh 170 lbs. Am I being overly optimistic here?

Also, why do tourers generally go with cantilever brakes? What is the problem with side-pulls on a touring bike? Simplicity? Not enough power? Just wondering.