I had a hell of a time mounting a front tire on my GS1100 (same size as an XS). First of all, I got rid of the tube. I had two fail on me soon after installation. I filed a flat on the inner rim. I drilled out the rim to take a tubeless valve stem. I took the valve core out of the stem, then slipped a partially opened cotter pin down through the stem, with a nylon line attached to it. I pulled the nylon line outward through the rim. In this way, I could install the tire over the rim, and have the stem assembly flopping around inside the tire, with a few feet of retrieval line sticking out through the hole of the rim. The main problem I was having, was not getting enough volume of air flowing into the tire to get it to expand fast enough to seal off the beads and begin to inflate. What I did to remedy this was to use a large air hose that could flow lots of volume. I installed a ball valve on the end, then bushed it down to take a 1/8" NPT street elbow. A street elbow has female threads at one end and male at the other. In this way, I had a 90 degree fitting I could push down into the hole in the rim, then open a ball valve for max flow through the elbow. When I popped the valve, I was amazed at how easy the tire crawled up onto the rim. I didn't use anywhere near 100psi (which I had the last time i mounted this tire and it still didn't go on right). I shut off the air and pulled out the valve stem with the line. Once it was in the hole, I slipped the jam nuts down over the thread and locked the stem in place. Once they were torqued down, I pulled on the line and the partially opened cotter pin slipped out through the valve stem. I installed the core, inflated the tire, and it hasn't leaked one pound since.