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.