Its time for new tires for my 2005 Dodge dually. Currently it has General Ameritrac LT235/80R 17E 117R tires. I don"t know the mileage on them as I bought the truck used but they have nice even wear ...
I had the Michelins from the factory on my F350, they were shot at 22,000 miles and had hundreds of cracks in the sidewalls near the bead. Way overpriced******tires. Sounds like you got decent life out of your Generals OP.