What trailer are you looking to get and what are you towing with? The loaded tongue weight of the trailer and the stated weight capacities of the hitch receiver are the primary determination for wdh need. If you look on your hitch receiver, you should see a load bearing weight and a weight distribution weight. Next remember dry tongue weight is pretty much a useless number as you will never see that weight. Ideally your tongue weight will be 13-15% of the loaded trailer weight (not dry weight).
Second determination for wdh is how level the TV sites, if the TV sites nose high then wdh is needed or adjustments to existing wdh need to be done.
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