The vertical distance between the top of the receiver tube opening and the ground, subtracted from the distance between the top of the trailer coupler and the ground, yields a crucial measurement for safe towing. For instance, if a vehicle’s receiver sits 20 inches above the ground, and the trailer coupler sits at 25 inches, the required adjustment to the hitch is 5 inches downward.
Proper hitch selection minimizes the risk of trailer sway, uneven tire wear, and compromised braking performance. Maintaining a level trailer is essential for stability and control, directly impacting safety and efficiency. Historically, mismatched hitch heights have contributed to accidents, highlighting the significance of accurate measurements.