^ thx for that verification MR. He also threw out that 6 year nominal life number, & we figure these would be ~13y+. We didn't check the tires' date stamps together but he/dealer presumably had before & knew these are well beyond their replace-no-matter-what date.
am told another trick with a rig with hydrolic leveling jacks like this is, when parking for indefinite times, even already level... drop the 4 jacks & raise the whole thing a bit... don't even know how much we're talking, couple inches/whatever, just to take the weight off the tires - let the jacks share the weight. I'll learn more about that when I take possession, & get the new owners' lesson about everything.
This guy's 37m vid below spends the last ~10m on the down low, all about the tires, chassis, etc. Interesting lesson!
RV Dolphin full Tour Inside & out, Top 2 Bottom