Wow........ guys
Any way to the OP I feel your pain I never would believed it but after owning a Hemi Dodge 8' Bed 4 Door as gentle as it could be driven, the back tires were wearing out twice as fast as the front. I stopped rotating tires on it. There just would not last either way. I have owned over 10 pickups over the years & it was the worst set up I have ever owned, the rear was just too light. not to mention it took me for a ride empty on the interstate at 55mph in a rain, With a small slope in the grass with no foot on the gas the tires would spin (2WD no limited slip)......... :) my solution was to add two more tires to the back & a Cummins & limited slip.. & at least 2500 lbs. more.