Your location isn't mentioned, but if you have Les Schwab stores within reach, I'd recommend them. We have no connection with them except we're long-time customers (30 years or more, I think).
We were Class A owners and needed a new set of 6 19.5" tires for our 32' Georgetown when we bought it at 8 years old. We got Toyos, which are Schwab's top line. Very happy with them in the four years (5000 miles) we did before giving up the lifestyle.
Frank and Eileen
No longer RVers or FR owners