When it comes time to replace your tires on your RV trailer you may have a few options. Sometimes you may also be confronted with a limited supply problem that limits your selection. What can you do? What are your options?
Now I am assuming you have followed the general instructions to get your RV on a truck scale and as a minimum confirmed the load on each axle when the trailer is loaded to its heaviest. I have numerous posts in this blog on scale weights and how to calculate and estimate the load on the heaviest individual tire
So knowing you need a tire that can support at least 115% (125% is better) of your measured or calculated heaviest load you are ready to start shopping.
I had one reader express some concern about what he called "Sidewall Shear" forces and thought a stiff sidewall would be a better selection. I have no idea how he was going to measure the inflated sidewall stiffness and pointed out that un-inflated sidewall stiffness was not a reliable predictor of the inflated stiffness.
Here is what I told him: