Yeah, the air pressure in the owners manual is there for the softest ride, not the best tire wear. I typically run 42psi up front and 40psi in the rear no matter what tires I'm running. If I keep the pressure above 40psi up I don't get any cupping and I can get 20,000 miles out of a set of tires.
2011 Cross Country
-Cee Baileys Windshield & Lowers. Victory Lower Bag Rails, Driver And Passenger Backrests.
-RPW Exhaust, Lloydz Air Filter, VM1 Cams, ATS (Timing Wheel), 1/4 turn throttle & IAV. PCV with Custom Tune by Coweta Customs.
105.2 HP & 127 Ft-Lbs on a Dynostar (Eddy Current) Dyno.