I recently bought a 2009 Starcraft and the tires were the originals, 10 years old. I replaced them with 5.3x12 Kenda bias plys with load range C. My spare is 5 years old and I will be taking the camper out of state soon so I will replace the spare and possibly get a second spare. I think I will change to 145/R12 radial trailer tires. Since I will be getting 2 new tires, who makes the best tires? I know this is somewhat of a loaded question in that everyone has limited experience with certain brands. Are there brands to definitely stay away from? The Kenda tires that I am currently running have been on 4 camping trips so far and I have had no problems with them.