Originally Posted by
Moisture
True, but assuming that braking and tire clearance is taken care of, would the bike work well with thicker tires?
Sure! The bike frame itself doesn't really care how wide the tires are (other than clearance, obviously). Tire diameter changes will impact the frame's geometry somewhat, but those differences would be pretty minor. I've done swaps like this before -- like putting 47-584 tires on my Giant Roam which came with 38-622 tires...and it rode great. In fact, I liked it
better in that configuration. But I do a lot of mixed surface riding where I prefer the larger air volume in the tires vs. a high pressure narrow tire on larger wheels. It'll depend on what you want -- but the FX will ride fine just the same.