After researching tire replacements with the majority of the work spent of Goodyear and Michelin, I concluded that the only advantage of an RV tire over any other tire is the rubber compound that is more UV tolerant. This makes a large difference in price over truck / bus tires.
I ended up buying 8 General ST3 tires. Half the price of Michelins and for 8 tires that is a lot of bucks! Why Generals….General is owned by Continental…they are widely used by trucks and Buses….Logically they must be safe since they are so widely used even by buses…..I have had a couple trips now and there is no additional road noise above the Goodyear RV670s they replaced, with no perceptible difference in handling.
Interesting note that the installer used no balance weights. Rather, they used shot bags that they simply throw in the tire prior to mounting it on the rim. The tire pressure breaks the bag open and the shot constantly balances the tire by centrifugal force.
I'm very satisfied with my decision..