Recently got a new front tire. Being as most of my riding is straight line, I went w/ a dunlop 220. The rear is a 207, and slightly worn, ~1200mi. or so. Anyway, at about 130 mph, Im getting a slight, VERY slight weave, nothing scary or "tank slapperish", just a weave that wasnt there before. Im thinking either 1) the tire isnt balanced perfectly, or 2) the combo of a slightly worn rear and a new front puts more weight on the rear. If #2 is the case, should I increase the preload a couple of clicks in the rear?