Join Date: Dec 2014
Location: NOVA (Ashburn), VA
Generally 8-10" is what people have reported on the forum, but it depends on the vehicle + trailer combination.
A good way of doing it, if possible is buy several (that you can return) and actually hitch up and check the height. The trailer frame should be level, or slightly low in front. Remember you are going to have ~10-12% of your trailer+cargo weight on the hitch.
The other way to get a somewhat reasonable measurement to to measure to the bottom of the receiver hitch on the vehicle and to the bottom of the coupling on the trailer, when level. The difference will be roughly the amount of drop you need.
The right way is to load up vehicle plus trailer and find the drop height that has the trailer very slightly nose down.
If you are renting from U-Haul, and you don't have a draw bar, rent/buy it from U-Haul when you get there. They should give the right one, but make sure you still check for level.
You can also get an adjustable hitch, but they are much heavier and more expensive.
'15 Deep Cherry Red TH w/Brown Interior. 3.2L V-6
Safety-Tec, Cold Weather, Technology, Comfort, Tow, Leather.
Gobi Stealth roof rack with ladder.
My testing platform for electronics/telemetry experimenting.