5th Wheel Adjustment Chart | Dial In Ride Height

A solid fifth-wheel setup starts with a level trailer, about 5 1/2 inches of bed-rail clearance, and the right hitch height.

If you searched for a 5th wheel adjustment chart, you likely want a faster way to set your hitch without guesswork. This page is built for RV-style fifth-wheel towing with a pickup. The aim is simple: the trailer rides close to level, clears the bed rails, and stays settled on the road.

Most bad setups show up in the same ways. The trailer rides nose high. The bed rails sit too close to the overhang. Backing feels tight near the cab. Those signs usually trace back to three linked settings: hitch head height, pin box position, and fore-aft hitch position.

How To Measure Before You Move Anything

Park the truck and trailer on flat ground. Chock the trailer tires. Set the trailer close to level on its landing gear, then write down these numbers:

• Ground to the underside of the king pin plate
• Ground to the top of the truck bed or open tailgate
• Bed rail to trailer overhang clearance after coupling
• Ground to the trailer frame near the front and near the rear after coupling

To get your starting hitch height, subtract the truck-bed measurement from the king pin plate measurement. That gives you the ballpark height for the hitch head. In CURT’s height-measuring steps, the maker also says the trailer should clear the truck bed walls by at least 5 1/2 inches. That gap gives you room for dips, driveway angles, and bed movement.

Next, couple the trailer and step back. If the front frame height reads higher than the rear, the trailer is nose high. If the front reads lower, it is nose low. Close to level is what you want. One bolt-hole change can fix the stance and throw off rail clearance, so recheck both every time.

What Each Adjustment Changes

Raising or lowering the hitch head changes the front ride height of the trailer. Lowering the hitch drops the trailer nose. Raising it lifts the trailer nose. Small hole changes can make a bigger shift than most owners expect once the trailer is loaded.

Moving the pin box does the same thing from the trailer side. Lowering the pin box in its wings raises the trailer body over the hitch and can add bed-rail clearance. Raising the pin box lowers the trailer body and can take out a nose-high stance.

Fore-aft adjustment changes where trailer weight sits over the axle and how much room you have near the cab. On some rail hitches, the window is small. B&W’s Patriot adjustment specs list 16 to 19 inches of height and 4 inches of front-to-back movement on that model, which shows why one hole position can matter.

5th Wheel Adjustment Chart For Level Towing

Use this chart as a starting map. Make one change at a time, re-couple, and measure again. That slow routine saves a lot of second-guessing.

What You See	What It Usually Means	First Move To Try
Starting height falls inside your hitch range	You are near the mark	Set the head there, couple up, then check rail clearance and trailer level
Starting height falls below the hitch’s lowest hole	The hitch sits too tall for the trailer as-is	Raise the pin box one position, then measure again
Starting height falls above the hitch’s highest hole	The trailer front sits too low for the truck	Lower the pin box one position or move to a taller approved hitch setup
Trailer is nose high after coupling	The front of the trailer rides too high	Lower the hitch head one step or raise the pin box one step
Trailer is nose low after coupling	The front of the trailer rides too low	Raise the hitch head one step or lower the pin box one step
Bed-rail clearance is under 5 1/2 inches	The overhang sits too close to the truck bed	Lower the pin box or raise the hitch head, then recheck trailer level
Front gap looks much larger than needed and the trailer is nose high	You likely have more front lift than you need	Lower the hitch head or raise the pin box, then measure again
Cab clearance feels tight in a short-bed truck	Turning room may be limited	Check fore-aft holes or slider use exactly as your hitch manual lays out

How To Make Changes Without Chasing New Problems

Many owners fix the first thing they see, then create a second problem. A trailer that sits level but barely clears the bed rails is not done. A trailer that clears the rails but rides nose high is not done either. Every move needs two checks: level and clearance.

If You Change Hitch Height

Move the head one hole set, torque it to the maker’s spec, couple up again, and remeasure. This is often the cleanest first move when the trailer is plainly nose high or nose low and your bed-rail gap still leaves room to work.

During hookup, the king pin box should sit slightly lower than the hitch plate so the pin rides up the skid plate and locks cleanly. A small drop keeps the hitch from trying to “high-pin” and missing full jaw engagement.

If You Change Pin Box Position

Pin box changes can rescue a setup when hitch holes alone are not enough. Lowering the pin box raises the trailer body over the truck. Raising the pin box lowers the trailer body. Since this also changes how the trailer sits front to rear, check frame height at both ends after every move.

This step also helps when you switch trucks. A taller pickup can force a different pin box setting even if the trailer towed fine behind the old one. Write down the final bolt-hole position once you find it. That note can save a lot of garage time later.

If You Use Fore-Aft Adjustment Or A Slider

Keep your normal towing position over or just ahead of the axle, as shown by the hitch maker. Rearward slider travel is for low-speed maneuvering, not daily towing down the highway. If your hitch has fore-aft holes, use them to fine-tune turning room and cab clearance, then do a slow parking-lot turn test before the next trip.

Road Signs That Tell You To Recheck The Setup

Your first short tow says more than ten garage measurements. You are watching for clues that one more adjustment is still needed.

What You Feel Or See	Usual Cause	What To Check Next
Trailer front looks high in the mirrors	Hitch is too high or pin box is too low	Measure front and rear frame height on level pavement
Trailer gets close to the bed on dips or angled drives	Bed-rail clearance is too tight	Stop and fix the clearance before the next trip
Backing feels tight near the cab	Fore-aft setting or truck-bed length needs another look	Check turning clearance and slider procedure
Coupling feels awkward and the jaws do not latch cleanly	Trailer height is wrong during hookup	Set the king pin box slightly below the hitch plate before backing in
Uneven tire wear shows up over time	Trailer may be running out of level	Remeasure stance and verify the final loaded setup
Chucking stays after the trailer looks level	Height may be fine; another part of the setup may need attention	Check jaw engagement, pin box hardware, tire pressure, and suspension

After The First Short Tow

Park back on flat ground and measure again. Hardware can settle, and a driveway can hide a stance issue that shows up on the road. Re-torque bolts to the hitch and pin box specs in your manual, then save the final numbers in your phone or glove box.

A Simple Order For Dialing It In

1. Level the trailer on its landing gear.
2. Measure king pin plate height and truck-bed height.
3. Set the hitch close to that starting number.
4. Couple up and check bed-rail clearance and front-to-rear frame height.
5. Change one thing, then measure again.
6. Do a short test tow and a slow turn check before calling it done.

That order keeps the job clean. If you jump straight to random bolt holes, the setup can drift fast. If you measure, move once, and recheck, the right setting usually shows itself in a couple of rounds.

A good 5th wheel adjustment chart does not replace your hitch manual. It gives you a repeatable way to get back to level after a new truck, taller tires, a different pin box setting, or a fresh hitch install. When the trailer rides close to level, clears the bed, and turns without crowding the cab, you are there.