Actually, I get pretty good mileage out of PR's and Avons. I took my PRs off @ 5,000 miles because I had a long trip planned. They are in the garage to be remounted when the 021s (from the WFO 3500 mile adventure) are tossed. I'm guessing there's another 2500+ miles left on the PRs.
Of course I DO get flat spots on the rear. I commute on freeways and that is bound to cause the center of the rear tire to wear quicker. Its just the nature of my type of riding, just as uberkul wears the edges out on his tires because most of his riding is done in the Sierras. It doesn't mean one style of riding or one brand of tire is "wrong", we just don't ride am adequate balance of different roads to wear our tires evenly.
The only tires I have really had issue with are the new 'Stone 021's and even that was MY fault because with the bike fully loaded, including the top case and the tailbag mounted on the pillion loaded with tools and First Aid equipment, I "pushed" (enjoyed, was exhuberant with) the tires on twisty roads. Assuming you understand "hanging off" a fully loaded sport tourer on NorCal twisty secondary mountain roads at speed is pushing the envelope of tire wear/response to input.
No way I can blame the tires for that.
A. no cupping on 021s or PRs
B. flat spot is a response to freeway riding and extreme acceleration @ on ramps
C. mileage mentioned above
D. no "wobbes" from PRs or 021s
So, I'm satisfied but I'm still awaiting a tire that will stick like glue and last 15K miles!
Sheesh, another lengthy response. I'm starting to sound like the "old" MM2...I must be getting better!