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've had good service from Michelin LTX A/S tires. Over 100k on the last set on a Ram 2500HD. Just replaced the Continentals on my F250 with Firestone Transforce HT's at 66k miles. Don't know about longevity but first impression is they're perfectly round and balanced with very few and little weights on the rims. One tire has none. I hope they last because I like 'em now. Friend has had good longevity from Coopers as well.