I recently had 4 new tires put on my 5'r at NTB.
They claim they never balance trailer tires.
I asked them nicely to balance mine.
Another thing to keep in mind is If you are running LT tires on your camper.
Make sure they replace your valve stems with high pressure valve stems.
NTB (Alvin tx) used regular passenger car VS's on my 5'r tires, and they put one on my truck.
I made it back to Florida, but one failed yesterday and my rear tire went flat. Luckily I have a dually and the tire was not damaged.
Now I'm going to have to pull the 5'r to a local NTB to have all the VS's replaced ....
The high pressure valve stems will have metal in the center (between the cap and wheel) regular ones will not hold 80 psi. According to the local Tire Plus.