Just because I read that the GT is for sport touring, which I think is more my riding style (still have chicken strips). Do you suggest otherwise?
PR IVs are pretty much a sport-touring tire in any case. The "GT" designation is something several tire makers have added to tires that have stiffer sidewalls for heavier machines. I have been running the Pirelli Angel GTs which have superceded the standard Angels. Angels were good tires, but after a modicum of miles they displayed signs of deteriorating handling on 500+-lb. machines due to the more flexible sidewalls. This may have been the issue with the Michelin PR IIIs, but the manufacturer never said much about it. They were certainly not on the market for very long before the IVs came out.
'07 CPB Blue; ZGST windscreen with MRA X-screen adjustable spoiler, tube bar adaptor, PC III, ATRE,BMC air filter, modified stock seat with 2nd Look cover,Scorpion Flame Ti slip-ons, Galfer rotors front and rear, braided-stainless lines, C-F 10R front fender, C-F hugger, C-F inner fairing panels, painted foreman's fins with faux C-F inlay, polished rim lips wired for heated gear and accessories, Givi V35 side bags and E41 topcase with SW-Motech qd mounts