Choose the correct drop or rise for a tow hitch ball mount by leveling the trailer tongue and measuring the difference in heights of the tow hitch receiver and the ball. Choosing the proper height makes towing safer.
By the DIY experts of The Family Handyman Magazine:March 2012
On level ground measure the height of the receiver top and the height of the ball skirt. The difference is your ball mount drop or rise.
You can choose from a wide range of ball mount drops and rises.
Buying the right ball mount for receiver
hitches is critical to the safe operation of
your trailer. If you install the wrong
mount, the weight imbalance may break
either the ball mount or the trailer coupling,
causing a huge accident that could
easily kill people. Follow the measuring
instructions below to find the right “drop”
or “rise” height.
Park the vehicle and the trailer on level
ground. Drop the trailer jack and level the
tongue with a bubble level. Then lock the
proper-size trailer ball into the trailer
coupling. Measure from the ground to the
skirt of the ball. Then measure from the
ground to the top of the vehicle hitch
receiver. The difference between the two
measurements is the “drop,” or “rise.”
Find the ball mount that’s closest.
Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.
Avoid last-minute shopping trips by having all your materials ready ahead of time. Here's a list.
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