Really? In NC they charge you for whatever weight you declare. In other word a F150 can buy a 10,000lb weighted tag. So just who determines all these weights etc I see described in this thread? The manufacture of the hitch, the vehicle, the DOT, the FBI, Mother Goose? And who has ever had the hitch on an RV checked for anything by anybody. Couple of things I know for sure, I have been towing for more than 50 years, have been through scales, cited for speeding, involved in 2 accidents while towing, (not my fault) had registration papers checked, VIN on trailers, etc. But not once has anyone checked my hitch for anything or the length of my rig. Some internet "experts" say I am to long, to heavy, not licensed right, now my hitch is even questioned.......but so far as I know as many times as I have been stopped, crossed scales, and been ticketed for speeding none of the above has been questioned and my stuff goes down the road straight as an arrow.