The old saying, "Use it or lose it" may apply here also. Among our RV buddies, those who only use their rigs a couple of times a year seem to have the most trouble with tires, batteries, wheel bearing seals, etc. I believe those who live in the right climate could benefit by putting a few miles on it every month. For the rest of us, jacking it up correctly to unload the axles and getting the tires off the ground helps. I'm in the camp who believes covering tires is worthwhile if the trailer won't be used for awhile. Some bring the wheels indoors if they have room.
Air Safe Hitch, Reese Dual Cam 800#, Centramatics