No tires are build equal.
When I bought my vintage conversion, it was standing on tires 20+ years old (those years only last digit was on DOT code, so rear recaps could be 30 yo) .
The tires had cracks all the way around the side, some where I could stick my finger into.
Yet the coach made 150 miles home just fine.
If the tire can hold max rated pressure - it is not likely to blow on slow drive home.
The theory behind RV tires is that they have more of waxes or paraffin in the compound, to give it more protection when park for long periods, but lately I am getting impression that newer tires age faster than the tires in the past.
Somehow it goes with batteries quality.
I've been buying 100 months warranted batteries for years, but now Costco offers only 48 months warranty.