BigDog,
I bought 7 of them for our three axle TH...the factory tires developed a sidewall bulge while traveling through some twisty mountain roads, possibly from flexing the weak side walls. I put these on at the advice of some on the Dutchmen forum and have not looked back. I run mine at 100psi since I only have 15k on the three axles, plus, the idiot tire shop cheaper out on the valve stems, only rated to 100psi. Will get them replaced one day.
We have about 2k miles on the tires, they are quite heavy, but the whole carccas is steel. Hope you enjoy.
Cale