Tire brands and life expectancy for 5,000 pound TT?

Fact is. Tires rot when they sit. It don't matter what brand. They rot from lack of lubrication. Rolling lubes them. Me I have learned my lesson. After having 3 tires blow out at 3 1/2 years. Mine come off now at the end of their third season. Extream you say. see what you do after changing 3 TT tires on the side of the road. It ain't fun