Here's a question for you with some experience. before our last outing by looking at our tires they were properly inflated- that is to say to sag in the tire, and the bottom of the tire was even or flat where it met the road. However, there were only 35 PSI, & the tire called for 50 PSI. So I inflated them to 50 PSI, but the tires were now "crowned" at the road- the tire was not sitting level on the ground. However, several days & several hundred miles later there was significant wear on the inside of the tire- it was like there there was a line on the middle of the tire- the inside tread was gone, the outside was fine. So, can too much air cause a tire to wear unevenly? Too much weight in the PUP? (less then 250 lbs). Old tires to begin with? Anybody with suggestions?