When addressing what is legal it is seldom the case that weight enters into tickets, etc. Think of the last time or the ever time when you heard of someone hauling non-commercially being stopped for a weight violation. In a discussion I had personally with a leo, he said they do not even more note of weight or weight ratings here in Tennessee. I think there are plenty of reason not to become overly concerned about being ticketed although there are good reasons not to run over your ratings.
Here is Tennessee I drive up to our county clerk to register my F350. She asks if I am hauling commercial. I say no maam, I use my truck to haul my RV and that is that. Registering non-commercial use is the same as a car. Truck campers here are also not registered as they are regarded as cargo, not titled.
Motto here is there is a lot of variance between states.
Steve and Andra
2012 F350 6.2 gasser SRW LB
Fab Fours front and rear in case we run into a rhino
2019 Northstar Laredo SC