Here in Connecticut they will not let you register the vehicle for more weight then the GVW that the truck is rated for. They run the VIN number and it gives them a range (on my truck it came up as 8501-9000 pounds.) I tried to register it for 10,500 because everything over 10,000 GVW in Connecticut is exempt from emissions, but they wouldn’t let me do it because it was over the range. Guess there is no way I could legally tow anything into PA.
Lets look at this another way, say you have a 3500 truck that the GVW on the door sticker is 14,500 but you live in PA so you register is for 24,490 so you can tow your enclosed car trailer that is rated for 9990 pounds. Does that mean if you are not towing your trailer, that you can now legally load up the back of the truck until just the truck weighs 24,990 pounds? How could the friendly PA DOT officer give you a ticket for being overweight if the truck was legally registered for it?