THE LONG ANSWER... I just had my ws31 aligned last week. I have very minor inside wear on the steer tires after 9500 miles on factory alignment. The Tech doing the alignment said "Rotate the two front tires as a pair to the right rear, right rears to left rear and left rears to front". He asked if I stored the MH outside or inside. Outside I said, with tire covers. He says rotating helps limit sun exposure to the same tire sidewalls. The tires are flipped inside out and side to side as they are moved around the MH. Take it or leave it...just what he told me.