A OK leo would have to cite some type of code for a weights violation. As I stated above we have no weights to register a private use truck so there is no violation even if your 1/2 ton had a 15000 lb registered GVW.
Like the California leo says when asked in a email if being over a GVWR or a GCWR was against a state law. His answer was; (snipped for length)
A: The California Vehicle Code (CVC) does not contain a law that
specifically limits the amount of weight a vehicle may tow based on the
towing vehicle GVWR or GCWR. There are, however, laws that limit the
amount a vehicle may tow based on other criteria.
Section 1085(d) of Title 13 California Code of Regulations prohibits
the loading of tires above the maximum load rating marked on the tire,
or if unmarked the maximum load rating as specified in the applicable
Federal Motor Vehicle Safety Standard, or in a publication furnished to
the public by the tire manufacturer. This would most likely happen in
the case of a pickup truck towing a large fifth wheel travel trailer, as
those types of trailers tend to transfer a larger portion of their
weight to the last axle of the towing unit causing that axle to exceed
the tire load limits.
I trust this has adequately answered your questions. Should you desire
any further information, please contact Officer Ron Leimer, of my staff,
at (916) 445-1865.
Sincerely,
S. B. DOWLING, Captain
My state is the same. They don't care what "weights" you have your private use vehicle registered at as long as the weights your carrying doesn't exceed the vehicles tire/axle rating like the CA LEO says in the email.