Greetings all. My GPz900 takes a 130/80 18 rear tire. Almost impossible to find that tire size locally, only 1 type available that looks very much like a cheap cheng shin but branded a Spitfire for 279.00. Before I go through the hassle and expense (did it on my KZ750 but that's another story) of swapping in a new swingarm and more current rim etc, can anyone take an educated guess as to what the max tire size I can fit on this stock rim might be? I would like to end up with a bit less height, but more width and was considering a 150/70 18 (which is listed as a replacement tire for this bike in Avon's catalogue). I have lots (+1.75") of swingarm and chain clearance, minimal height (0.0") clearance.
