RV tires die from old age. No matter how good they look, (and they often look excellent) after 8-10 years they become an accident just waiting to happen.
And a blow-out in an RV is not necessarily like any blow-out you've had before. Your RV is fiberglass, aluminum and wood, not sturdy steel like your car. The exploding tire can take out your walls, waste or water tanks, floors and cabinets, and so on. The damage can be much more extensive.
The date codes should be impressed
into the tire, not raised like the other numbers, like this;
If you can only find a code with 3 digits, its from before the year 2000.