If i could give an opinion, whats the complete size, I took the factory goodyears off after i had two different blowouts within two months and only 19,000 miles on it. I have managed a les schwab here in wa, state. Age is a factor and quality of the tire. Spend a bit of money, get a good brand, do all the same, not two different in front from rear. Contrary to popular belief, you can rotate modern tires and change direction with no problems, for example, the two fronts to the right rear, then the fronts again to the left rear, straight back and to the front, which helps equal wear and longevity. Buy the highest load rating available in your size and if it’s more than the factory load rating, you may adjust air psi, usually a bit higher depending on tread, the higher load rating helps the tire USUALLY not flex as much and helps keep it in a sense cooler, not working or flexing as hard. The more the tire flexes or works, the warmer it gets and can affect life. And remember to ask the place you buy them, especially if its a size they dont go through a lot of, to look at the D.O.T. Number on the side. They might of been sitting around for a few years or more, check when they are off the production line and get fresh ones. I put toyos on my coach, they ride nice and are a good top of the line product in my opinion.