FWIW, I just replaced both PR2s in the last month. Got 3,381 miles out of the rear, and 4,450 out of the front. Didn't like the handling or shake of the front tire the last 800-1,000 miles, but it was better than my Bridgestone 021 front at the end of its' life. I am diligent about tire pressure (42/42), ride 2-up 15% of the time, rarely run fully loaded (not THAT kind of loaded), but do hit the twisties with zeal. Geez, if I didn't want to rip it up once in a while, I'd have a cruiser, or GoldWing, or convertible.