[Hblick48]

You might have a weak leaf spring. I wore out a set of tires in one 8,000 mile trip. All were so worn on the inside that towards the end of that trip, We stopped at Les Schwab in Toolee, Utah and had them flip the tires so the worn part was on the outside. They were nice enough to let us boondock under their awning that night.

Turns out that my rig had two 6,000 pound axles with 2,500 pound leaf springs. Every time the rig bounced, the axle flexed and produced positive caster which wore out the inside of the tires. I replaced the springs with 3,000 pound ones (one extra leaf) and put on new tires.

Just completed 9,100 mile trip and tires still look new. I tracked tread depth on sides and middle of tires at start, mid, and end of trip. Tires wore evenly.

I also did the hillbilly alignment using a straight edge, level, chain, and bottle jack. Right side was way out, bent axle with chain and jack and got it aligned.