My experience with the XR is that I'm usually ready to get off it after 200 miles or so. That's just 2 stops for gas, and I'm not gonna miss those stops anyway because I have to stretch my legs. The seating position is pretty good, but not THAT good. I guess my conclusion has been that the gas tank isn't necessarily the limiting factor on riding the XR for long distances. It can certainly go as far as you want it to, but straight out of the box (mine is 100% stock) it is not going to be the sort of mile-eater that something like a Road King would be. Not to say that it can't be modified to be a decent distance machine (there are definitely some people who are doing it). YMMV, as they say. I share your sentiment about wanting a machine for longer trips, but my current thinking is to let the XR be what it is, and invest in a different machine for longer distances.