Rover_Bill wrote:
Snip... If attaching the TT REMOVES weight from the TV steering then you need a WDH.
Not quite. It will ALWAYS remove weight from the front axle. How much is determined by several factors but it will always happen. It may not always have the same effect though.
Given all factors being the same, then putting a weight behind the rear axle of the tow vehicle will always remove weight from the front axle. It doesn't matter how much the front of the truck weighs - the weight will still come off. The owner then needs to decide whether the truck is still within specs or whether WD is needed.
Barney