I've researched the RV tire thing quite a bit as well, and quite frankly, although there are a few isolated reports, the older Goodyear tires that used to be sold as RV tires are the only ones that come up with lawsuits and other reports of outright failure. I am running GY G647 19.5s. I had one of the older model GY RV tires that was on my coach when I bought it and it outright blew. Was that because it was that model tire? Or was it because it was a 10 year old tire that I failed to check the date codes on before I bought the coach? Probably the latter. I replaced them all with G647s and about a month later I had a tread separation on one of the new tires. Coincidence? Most likely. It was just a bad tire...it happens. I don't' think it's an industry standard to make bad RV tires so Goodyear can pay out claim after claim for failed tires. They made it right with me and my insurance company and I still have Goodyears on my RV. Am I completely anal-retentive about checking them before and monitoring them during a trip? Absolutely!
Look up any tire manufacturer and I think you'll see multiple reports of them failing. They make millions of tires each year...there's got to be some that fail...right? And those are the ones that we hear about.