Goodyear Endurance ST225/75R15

[travelkids]

We have a 2021 Minnie 2529RG.
At 17,870 miles we replaced the “China Bombs” that came with our Minnie with Goodyear Endurance ST225/75R15 (load range E) tires from Discount Tires in Pensacola, Florida. Build date on the Goodyear Endurance tires was late 2022. The Driver's side rear axle tire was worn down almost to the steel belts. The other three tires showed “normal” wear but we opted to replace them all...better safe than sorry!
At 33,200 miles (yes, I keep accurate records) we took our Minnie in for annual service which included bearing lubrication and brake adjustment. Again, the rear driver's side tire was almost bald; but slightly more worn on the inside than the outside.
We replaced that tire with another Goodyear Endurance from Discount Tire.
While at our favorite RV repair shop, they noted one (01) outer seal had failed and all 4 brake shoes had cracks in them. I opted to replace the backing plates which included the magnets and shoes on both left and and right side of both axles. Please note ”The Dexter 4400lb axles backing plate assemblies are NOT cheap.“
Thinking there may be an issue with the axles being out of alignment, we took our Minnie to a Trailer Shop...they build trailers! They found the axles to be within well acceptable tolerances
We (I) run the tires at 75psi and have a TPMS and frequently see tire temperatures well over 100 degree here in the south.
Any ideas from you tire experts as to what is causing this issue?
We'll replace all four tires after attending Camp Winnebago.

[wahoonc]

I would get the weights on each tire individually.

I had a single-axle camper that would eat left-side tires at nearly double the rate of the right-side tires. After weighing each side we found out that due to poor design, the left side of the camper was grossly overloaded.

Aaron