It's a whole system made up of components/sub-systems and most of the
advice deal with the components...not the whole system
Given that the OP admits to needing a higher weight class TV, but have
what you have...for now (congrats to the OP...most half ton owners
refuse to acknowledge that)
At or over the limits will NOT have the wheels instantly fall off, but
they will sooner and the biggie...ability to manhandle the setup
Engineers/designers do NOT design for the good days out there, but for
the worse day out there when Mr Murphy crosses your path. Either you
have the proper stuff or not. No time to go to the store for better/bigger
and/or resetup
Passenger class tires on full sized TV's is not a good thing when at
the limits. Even the higher class TV's with their higher class 'LT'
tires, but aired down for 'ride quality' will display this:
Go to any showroom and do this to bone stock 'P' and 'LT' shod TV's
Take your foot and shove the rear bumper sideways. Keep doing that to
find the natural harmonic and play on that
The softer tires (both 'P' and 'LT', but aired down) will continue to
yaw and have had them yaw so much the salesman thought it would hit
the window
That is what is being discussed now, but it is only one aspect of towing
well
This is, in part, why having a goal of proper TV & trailer attitude
is so important. More so at or over the limits. It's all about
that worse day out there and the ability of the TV to manhandle whatever
it is that you need to do
Back on tires...and the yaw that comes with them.
When the setup is swaying, it requires tires and suspension to have
the ability to manhandle. On that, there are two basic attributes:
slip angle and response, which are mainly the same thing
Slip angle is the angle the tires impart on the vehicle VS the dialed
in angle by the steering wheel.
Response is the time it takes the steering wheel change and the time
it takes the tires to impart that angle to the vehicle.