My 2013 F250 4X4, Crew Cab, with the10,000 GVW package which I bought new, is wearing the inside of both rear tires. It has 25,004 miles and I rotated the tires every 10k. At 24,000 miles I turned the tires around on the rims so I could wear the other side of the tires. I pull a 37' fifth...