Yes, I used the Kumho Radial 857 tires on it and have had zero problems to date. Since I've changed those out, we've put around 10k miles on them and they still look and run excellent. I keep the air pressure at 62psi before each trip to and from our destination and I also keep them covered with the white vinyl looking tire covers that I bought at the local RV store when it's in storage or if we're on an extended stay. If I remember right, I believe that I chose the 185R14's and I mounted them onto 14" 5 spoke HiSpec (HWT) aluminum rims with a high pressure valve stem (the ones with a metal sleeve inside that typically go on the E rated truck tires - 80psi) that I bought separately from the local Firestone dealer.
The only parts that I have not replaced yet are the center covers that cover up the bearing dust cover cap and the lug nuts. I could use some longer lugs for the lug nuts to grab onto, but for now, they are holding just fine and I check the torque on them each time I get ready for a trip. Can't have those flying off while I'm going down the highway.
Oh...good point too - they are D rated.
Here's the specs (meant for reference only) - http://www.tirerack.com/tires/tires....del=Radial+857
Where we've been:
2000 Rockwood Roo M-18 Hybrid
2006 Dodge Ram 2500 Auto 5.9 Diesel
Gone but not forgotten -1986 Rockwood 1003 PUP