The larger Class Cs seem to snack on tires, I have heard stories of people going many miles without having to replace a Load Range E tire on one... But I have never met a person that has not had to replace, at least several, tires face to face.
After having gone through well more than a dozen tires in the past few years I am going to do what I should have done in the first place. Install a set of Rickson 17.5" wheels and commercial steel wall load range G tires. It definitely would have been less expensive if I just sucked it up and spent the money the first time.