The GD Owner's forum has discussed this a lot. Overall, they appear to be a pretty dependable tire with limited accounts of failure. Of course, when they do fail, one of the first reactions of the modern camper is to post a negative review on an internet forum LOL
One nice thing that GD did on our new unit is that they installed Load Range "E" tires, which in our case exceed even the max load ratings of the camper itself. Other RV manufacturers (not all, but certainly others) would have installed a Load Range "D" tire on a rig with weight characteristics like ours.