How to Adjust Trailer Hitch Height | Level And Ready

Adjusting trailer hitch height starts with measuring both the receiver’s inside top edge and the trailer coupler’s bottom on level ground, then setting the ball mount to the difference.

Getting the height wrong puts constant stress on the hitch, the trailer frame, and your tow vehicle’s suspension. A trailer that noses down or rides tail-high also handles poorly at highway speeds. The fix takes about ten minutes and a tape measure. Here’s the exact sequence that works for a standard ball mount and an adjustable hitch.

What Measurements Do You Need?

Park both the tow vehicle and the trailer on a firm, level surface. Measure from the ground to the top inside edge of the receiver on the truck, then measure from the ground to the bottom of the coupler on the trailer. Do this with the trailer loaded to the weight you’ll actually tow — an empty trailer sits higher and gives you a false number.

Run the numbers: coupler height minus receiver height equals the drop. If the coupler sits 20 inches off the ground and the receiver measures 18 inches, you need a 2-inch drop. A negative result means you need rise instead.

The Simplest Formula

• Measure receiver height (top inside edge)
• Measure coupler height (bottom of the coupler)
• Subtract: coupler minus receiver = drop or rise

How Do You Set An Adjustable Ball Mount?

Adjustable hitches swap the math for trial-and-fit. Level the trailer, measure the coupler height, then pin the ball attachment into the shank hole that lands closest to that height. Couple up, check the trailer sits level front-to-rear, and adjust if it doesn’t.

Watch for tongue-weight sag. With the trailer coupled and full tongue weight on the ball, the rear of the tow vehicle drops and the coupler settles. If the trailer noses down after coupling, raise the ball holder by that measured sag and re-check. PullRight’s manuals describe exactly this compensating step on their height-adjustable models. When you find the right hole, lock it in with the hitch pin and clip and re-verify level.

Torque Specs And Safety Checks

Once the height is set, the hardware has to be tightened to spec.

Use the correct size and grade of replacement bolts from your dealer if anything is damaged, and never over-tighten set screws — that crushes the hitch components. Always verify the trailer is level front-to-rear before you hit the road. If you’re in the market for a hitch that adjusts in minutes rather than one that’s fixed, our tested roundup of the best adjustable hitches for trucks breaks down which models hold up under real towing loads.

Weight-Distribution Hitches Need Extra Steps

Weight-distribution hitches use spring bars to transfer load to the front axle, so height alone isn’t the whole job. The 2022 Ram 2500/3500 owner’s manual gives the standard procedure: measure the front fender height with the truck uncoupled, then couple the trailer and tension the bars. Adjust until the front fender returns to roughly halfway back toward its original uncoupled height. If the front squats below the baseline, you’ve got too much tension — back the washers or shims off per the manufacturer’s manual.

Head tilt and spring-bar tension vary by model, so follow the specific setup guide for your hitch. The starting washer count differs between brands, and the only reliable check is that front-fender measurement.

Common Mistakes That Ruin The Setup

• Measuring on unlevel ground — any slope corrupts both numbers
• Using the wrong reference points, like the top of the receiver instead of the inside top edge
• Measuring the trailer empty when it’ll be loaded for travel
• Ignoring tongue-weight sag, which drops the ball mount under load
• Mismatching ball size or rise/drop capacity to the measured difference

One honest pass with a tape measure beats guessing every time. The trailer should ride level, the hardware should be torqued to spec, and the front of your truck should sit close to its normal height with a weight-distribution rig hooked up.