From my research, only two manufacturers make RV tires..Goodyear and Michelin...the rest are truck tires. It's up to you what you put on your coach. While I'm not an engineer, my understanding is that the RV tires have different compounds that better support the RV lifestyle. Truck tires are designed for longer mileage so should be more robust. You sacrifice comfort for mileage, IMHO. Lots of posts, lots of opinions.
My opinion.?..do your research, as you're doing here, just don't sacrifice safety and comfort to save a few bucks..sometimes we step over dollars to pick up dimes......Dennis