Counterintuitive, but tires STIFFEN with Age. On cars,that works against us and we rejoice at that plush New Tire Ride. What's going on is the oils that make a new tire supple dissipate with time. And things start to crack and separate...
But I suppose it's possible that old RV tires will track and handle better than new with that stiffness. To the point of failure, that is...
I planned on replacing our Duravis R250's (a heavy duty rib like Michelin XPS) with LTX, TransForce, or a Uniroyal we looked at. Then I checked weight and found how close to max GAWR's we were and decided on new R250's. More expensive by about 25%. It's an odd deal. The ratings are the same for every brand within the size, load range etc. Yet there is a difference in durability. And handling.