One more note on the process of online discussion -- were it not for the challenging and probing (and yes, sometimes abrasive!) questions from folks with strong opinions, I doubt that I would have gone to the trouble of carefully cross-checking the recommendations of the various manufacturers, leading to the surprising (to me) discovery that the top firms use both ST and LT as standard equipment on expensive and big trailers.
Were beatin' a old topic to death again.
Using LT or P tires on any type of trailer (even rv trailers) isn't anything new.
You can learn even more by spending time on other general rv webs like this one or a brand specific forum where it comes to tire issues on trailers.
Some rv trailer mfg have had LT tires as a upgrade option on some models in certain years.....usually heavy trailers.
Carriage Domani 11500 gvwr 5th wheel trailer had a optional 20" dia X 10" wide American Racing wheels with P285/75-20" tires. Trailers mfg are under no obligation or legally required to use ST tires.
And there is no liability issues for the trailer owner to use a different type of tire than is on the vehicle tire placard.
