TW is a static representation of a dynamic force. It isn’t constant. A WDH moves that force from one point, to three, the trailer now having less effect on the TV.
Even without integrated anti-sway this tends to lessen the trailers tendency to wander around on the ball. Because it is, constantly. Which increases the number of steering corrections per 100-miles (a big truck metric), and increases wear. With integrated antisway, the trailer is always “encouraged” to travel fewer miles than otherwise (compared to the TV).
It’s almost always easy to tell a TT on the ball, no WD. It’s the one sensitive to traffic-generated or natural winds.
Weight of the trailer isn’t the the problem. That’s almost a non-starter. It’s the ability of the TT to handle winds. A square edged box just doesn’t. Especially with the stupidly tall floor height of today’s, given slideouts. Adverse winds are what cause loss of control accidents.
A solid axle 4WD pickup is crippled at birth. No road feel. Terrible instability. Why worsen that situation by not using a decent hitch? I use a Hensley with my one ton. Does the TT need it? Not as much as the truck since the TT is better at staying upright. The truck is the weak link.
Tail wags the dog.
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