[phillyg]

Just to be clear, the OP asked about changing out his tires in the same size, "......The tires are ST235/80R 16F (12 ply).
Looking to upgrade......Sailun ST 235/80R 16 G9 Rated/14ply (all steel)......Or......Hercules ST235/80R 16 H-901 (G rate/14 ply all steel)......" but then he asked the question that set fire to the keyboards about safety violations, deviations and wheel capacity, etc., "could I put 85Rs on the 295RL model?"

OP, I missed that your current tires are F-rated, so their max is 95psi, right? Calandlinda reminded us your wheels must be rated to 110psi. They should be, but you must make sure if you go G-rated. It appears Sailuns or Hercules in the same size will work for you, and Sailun has a great rep. After weighing your trailer use the appropriate psi from the Sailun load table; it shouldn't be more that 95psi. Lastly, while you could go to 85s, I don't see the need since you only had F-rated tires to begin with.