Towing Facts You Must Know When Pulling an Enclosed Trailer

Neighbors Trailer

Nov 13, 2023
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6 min read
enclosed trailer hauling consideration

Pulling an enclosed trailer for the first time is one of those tasks that looks simple from the driver's seat of your truck and reveals real complexity the moment you hit the road. Tall, boxy enclosed trailers behave differently in crosswinds and on hills than open utility trailers, and the math on weight ratings catches a lot of first-time renters by surprise. This 2026 guide gives you the towing facts that actually matter (the ones that keep you legal, safe, and not stuck on the shoulder).

Whether you are renting an enclosed trailer for a one-time move or hauling for a side business, the principles below apply. Skim the table for a quick capacity reference, then read the sections that match what you are about to tow.

The Three Weight Numbers Everyone Confuses

Three numbers determine whether your truck and trailer combination is legal and safe.

GVWR (Gross Vehicle Weight Rating) is the maximum allowed weight of your truck including passengers, fuel, and cargo. The number is on the door pillar sticker.

GTW (Gross Trailer Weight) is the loaded weight of the trailer plus everything in it. This is what you weigh at a CAT scale.

GCWR (Gross Combined Weight Rating) is the maximum allowed weight of the truck and trailer together when hooked up. This is the number that limits real-world towing more often than people realize.

Towing capacity is whatever GCWR minus the loaded truck weight equals. If your loaded truck weighs 7,500 pounds and your GCWR is 16,000 pounds, you can pull 8,500 pounds of trailer (loaded), not the 12,000-pound number on the sales brochure.

Tongue Weight: The Number That Determines Stability

Tongue weight is the downward force the trailer puts on the hitch ball. For an enclosed trailer, you want tongue weight at 10 to 15 percent of the loaded gross trailer weight. Less than 10 percent and the trailer will sway. More than 15 percent and your truck's rear suspension squats and your front tires lose grip.

You can adjust tongue weight by moving the cargo forward or back inside the trailer. Heavy items go just forward of the axle for the best balance.

Hitch Class and Trailer Weight: Match Them Right

Trailer hitches come in classes by capacity. Use the table below to match your hitch class to your loaded enclosed trailer weight.

Hitch Class	Max Gross Trailer Weight	Max Tongue Weight	Typical Enclosed Trailer
Class I	2,000 lbs	200 lbs	Small 4x6 cargo only
Class II	3,500 lbs	350 lbs	5x8, 5x10 cargo
Class III	8,000 lbs	800 lbs	6x12, 7x14 enclosed
Class IV	10,000 lbs	1,000 lbs	7x16, 8.5x20 enclosed
Class V	17,000 to 20,000 lbs	1,700 to 2,700 lbs	8.5x24+, gooseneck

Brake Controllers: When You Need One

Most states require trailer brakes for any trailer over 3,000 pounds gross weight. Enclosed trailers in the 6x12 and larger sizes almost always exceed this. To use trailer brakes, your tow vehicle needs a brake controller, either factory-installed (most modern trucks) or aftermarket.

Without a working brake controller, your enclosed trailer's brakes do nothing, your truck does all the stopping work, and your stopping distance can double. Always confirm your brake controller setup is functioning before you tow.

Real-World Stopping Distance: Why Tow Carefully

The chart below shows estimated stopping distances at 60 mph for a half-ton truck under different load conditions. The takeaway: a loaded enclosed trailer can roughly double your stopping distance compared to driving solo.

Bar chart showing stopping distance at 60 mph by trailer load for a half-ton truck

NeighborsTrailer.com

Crosswind and Truck Wash Effects

Tall enclosed trailers act like sails. A 7x16 enclosed trailer presents nearly 100 square feet of side area to the wind. In sustained 25 mph crosswinds or when an 18-wheeler passes you on the freeway, that area pushes hard on the trailer.

The fixes: load heavy, drive a bit slower in wind, leave generous following distances, and use a properly set up sway control hitch. Most importantly, never let yourself get rushed into reactive corrections; small steady steering inputs work better than big ones.

Trip Planning Facts That Save Time

Before pulling out, plan around three things: fuel range, truck stops with pull-through parking, and weigh stations. Enclosed trailers eat fuel: expect a 20 to 35 percent drop in mpg compared to solo driving. Map your fuel stops with that in mind.

If your route crosses state lines and you are towing commercially, a quick check of state-by-state regulations is worth the five minutes. The 2026 trailer towing laws guide covers speed limits, brake rules, and registration requirements that vary state by state.

Mistakes to Avoid the First Time

The most common errors first-time enclosed trailer renters make:

Overloading. Just because the trailer holds it does not mean your truck can tow it. Always check GCWR.

Loading too far back. Tongue weight under 10 percent invites sway. Heavy items go just forward of the axle.

Skipping the pre-tow check. Tires, lights, brakes, hitch pin, safety chains, breakaway cable. Five minutes saves a roadside emergency.

Driving the truck like a truck. A loaded combination handles like a different vehicle. Slow down, brake earlier, accept slower lane changes.

Frequently Asked Questions

How much can my truck actually tow?

Your registration card or door sticker shows the GCWR. Subtract your loaded truck weight (with passengers and fuel) from GCWR to find your real-world towing capacity for that trip.

Do I need a CDL to tow an enclosed trailer?

Most non-commercial enclosed trailer towing in the US does not require a CDL. The line is generally drawn at combined weight over 26,001 pounds with a trailer over 10,000 pounds, but rules vary by state and use case.

Should I get a weight distribution hitch?

If your loaded enclosed trailer is over about 5,000 pounds and your truck's manual recommends one, yes. The improvement in stability and braking is dramatic.

Can I tow an enclosed trailer with an SUV?

Many full-size SUVs have GCWRs that allow towing 6,000 to 8,000 pounds, which covers most 7x14 and smaller enclosed trailers. Always check your specific SUV's tow rating, not the marketing number.

What speed should I tow at?State law varies, but most veterans tow at 60 to 65 mph for stability and tire safety. Some trailer tires are speed-limited to 65 mph regardless of vehicle posted speed limits.

Final Take

Towing an enclosed trailer is well within reach for most drivers, but the difference between a smooth haul and a stressful one comes down to knowing your numbers. Match your hitch class to your trailer, keep tongue weight in the 10 to 15 percent zone, run your brakes, and respect the wind. Do that and an enclosed trailer becomes one of the most useful pieces of equipment you can rent or own.

Need to rent an enclosed trailer with a properly set up hitch and trailer brakes? Browse Neighbors Trailer's peer-to-peer listings to book a tow-ready rig in minutes.

Content updated May 2026