After reading all of the horror stories of blowouts I ordered new Hankook tires for my MH. The old 670's were dated the 39th week of 2006. I had good experience with the Goodyears but from what I read...
Just make sure that any tire you buy is rated for the weight of your motor home. If I was told correctly when I shopped for tires the 275/70/22.5 hankooks were not rated the same as the same size michelins.ie my front tires, for the weight, need to be inflated to 100 psi. The handbooks would have to be inflated to 130 psi. More than the max for the wheel.