# 6x12 Cargo Trailer Rental for Bigger Loads

> The 6x12 U-Haul cargo trailer is the largest enclosed trailer, for about one to two-bedroom loads behind a capable truck or SUV. Call (909) 608-7699.

Source: https://goodyearelitetireupland.com/u-haul/6x12-cargo-trailer/  
Last updated: 2026-09-17  
Business: Goodyear Elite Tire Upland, 1775 W Foothill Blvd, Upland, CA 91786, (909) 608-7699

**TL;DR:** The **6x12 cargo trailer** is the largest enclosed U-Haul trailer. It typically handles **one to two bedrooms** and needs a **capable pickup or SUV** to tow.

The 6x12 cargo trailer is the largest enclosed U-Haul trailer, with a floor of roughly six by twelve feet. It typically handles about a one to two-bedroom load. Because a loaded 6x12 is heavy and long, it typically needs a capable pickup or larger SUV. Call (909) 608-7699 to reserve and confirm your vehicle meets the requirements.

## When is a 6x12 the right trailer?

When your load is too big for a 5x8 but you still want to tow instead of driving a truck. The 6x12 has much more floor and height than the smaller trailers, which opens it up to real furniture.

It is often the right choice for:

- A full one-bedroom or small two-bedroom move
- A pickup owner who wants to haul the household and keep the truck
- A long move where you want your own vehicle at the destination
- Business inventory, event gear or a contractor's tools

If your vehicle cannot tow this size, a [15-foot truck](https://goodyearelitetireupland.com/u-haul/15-foot-truck/) carries a similar load without towing.

## Is a 6x12 trailer or a 15-foot truck the better choice?

Both typically carry about a one to two-bedroom load. The right pick depends on your vehicle and how you want the move to feel. We confirm current specs for either when you call.

| Factor | 6x12 cargo trailer | 15-foot truck |
|---|---|---|
| What you drive | Your own pickup or SUV | A rental truck |
| Tow vehicle needed | Yes, a capable one | No |
| At the destination | Your vehicle is there once unhitched | You return or drop the truck |
| Loading | Lower floor, some units with a ramp door | Ramp typically available |
| Driving feel | Long rig, sway to manage | Tall box, wide turns |

If your pickup is already set up for towing, the trailer keeps the move in a vehicle you know. If not, the truck is simpler.

## What vehicle can pull a 6x12 cargo trailer?

A loaded 6x12 is heavy, so the tow vehicle matters more here than with any smaller cargo trailer. It typically needs a pickup or a larger SUV with a proper receiver hitch and trailer wiring. U-Haul sets the exact requirements, and we check your vehicle against them when you call.

Plan on:

- A receiver hitch rated for the loaded trailer
- The correct ball size and a solid ball mount
- Working trailer lights
- Tires with good tread and the right load capacity
- Brakes in good condition

A small SUV or sedan is typically not a match for this trailer. We will tell you plainly on the phone if your vehicle is not a fit, and suggest a different option.

## What should your hitch setup look like for a 6x12?

A heavy trailer puts every part of the hitch to work. Go over this list before pickup day, then let us check it with the trailer connected.

- **Receiver class** rated for the loaded trailer, not just the empty one.
- **Ball mount drop or rise** that keeps the trailer close to level.
- **Ball size** that matches the coupler, with the nut tight.
- **Pin and clip** present and fully seated.
- **Chain loops** solid, with no cracks.
- **Wiring plug** clean and fully working.
- **Rear tires** set to the loaded pressure on the door placard.

The [hitch and tow package](https://goodyearelitetireupland.com/u-haul/hitch-tow-package/) page explains receiver classes, and our [hitch and tow package inspection](https://goodyearelitetireupland.com/services/hitch-tow-package-inspection/) service covers wiring repairs when a plug fails.

## How do you load a 12-foot trailer?

A long trailer gives you more room to get the balance wrong. Aim for slightly more weight in front of the axle, and keep it even across the width.

1. Hitch the trailer first and set your parking brake.
2. Heaviest furniture and appliances go forward of the axle, low.
3. Mattresses and long pieces along the side walls.
4. Boxes fill the middle, heavy on bottom, light on top.
5. Nothing heavy at the very back of the trailer.
6. Strap each section to the tie-downs.

Some 6x12 cargo trailers typically have a ramp-style rear door. Confirm the setup for your trailer when you call.

## How do you prevent trailer sway with a large trailer?

Trailer sway is a side-to-side motion that can build at speed. With a large trailer, prevention is everything. Most sway comes from too little tongue weight, too much speed, or strong crosswinds.

- **Load right:** enough weight ahead of the axle.
- **Keep speed moderate:** slower speeds give the trailer less energy to swing.
- **Watch the wind:** slow down on open stretches and when passed by big rigs.
- **Keep tires right:** proper pressure on both your vehicle and the trailer.

If sway starts, ease off the gas gradually and hold the wheel steady. Do not slam the brakes or jerk the steering. Once it settles, pull over safely and check the load.

## How do you handle long grades with a heavy trailer?

Grades are where a heavy trailer tests the tow vehicle. Heading north on the I-15 through the Cajon Pass, or east on the I-10, give the engine room on the climb and control your speed on the way down.

- Climb in the right lane at a steady speed and watch the temperature gauge.
- Before the descent, slow down and shift to a lower gear.
- Brake in firm, short applications instead of riding the pedal.
- If you smell hot brakes, pull over somewhere safe and let them cool.

Pads that were thin before the trip wear quickly under a trailer. The [brake service](https://goodyearelitetireupland.com/services/brake-service/) page covers what we check.

## What is it like to turn and park with a 6x12?

Your total length grows a lot. Right turns need a wide swing, lane changes need more space, and parking lots need planning. Towing mirror extensions are often needed to see past a trailer this wide.

- Pick fuel stations with pull-through lanes.
- Park at the edge of lots where you can drive out forward.
- Back up slowly with a spotter and small steering corrections.
- Give yourself much more distance to stop.

Take a practice loop around a quiet area before hitting the freeway.

## Should your pickup or SUV be inspected first?

With a heavy trailer, yes. A loaded 6x12 puts real demands on your rear tires, suspension and brakes, especially on long grades. Since we are a tire and repair shop, we can check your vehicle in the same visit as the trailer pickup.

We check tires for tread, age, pressure and load rating, and look at brake pads and suspension. You get a written estimate split into need and want. See our [free towing inspection](https://goodyearelitetireupland.com/u-haul/towing-inspection/) and [suspension service](https://goodyearelitetireupland.com/services/suspension-shocks-struts/) pages for more detail.

## Our process

1. **Confirm the load:** List furniture and boxes for about a one to two-bedroom move.
2. **Check your vehicle:** Call (909) 608-7699 so we can confirm your tow vehicle qualifies.
3. **Inspect the tow vehicle:** Optionally, we check tires, brakes and suspension before loading.
4. **Hook up and test:** We connect the trailer and test the coupler, chains and lights.
5. **Load for balance:** Weight ahead of the axle, even side to side, all strapped.
6. **Practice first:** Take a slow loop before the freeway and recheck the connection.

## What's included

- 6x12 cargo trailer reserved by phone
- Tow vehicle requirement check
- Hitch, ball and coupler check
- Trailer light test while connected
- Sway prevention and loading guidance
- Optional tire, brake and suspension check

## Frequently asked questions

### Can my SUV pull a 6x12 cargo trailer?

Larger SUVs sometimes can, with the right hitch and wiring. Smaller SUVs typically cannot. Call (909) 608-7699 with your year, make and model and we check it against the requirements.

### How much fits in a 6x12 cargo trailer?

Typically about a one to two-bedroom load: a bedroom set, a sofa, a table and boxes. We confirm current interior dimensions and load capacity when you call.

### What should I do if the trailer starts to sway?

Ease off the gas slowly and hold the steering wheel steady. Do not brake hard or jerk the wheel. Once it settles, pull over safely and check that heavy items are ahead of the axle.

### Do I need towing mirrors for a 6x12?

Often, yes. A 6x12 is wide enough that many vehicles cannot see past it with standard mirrors. We check your view at pickup and let you know.

### Can I do a one-way move with a 6x12 trailer?

Ask when you call. If a 6x12 is available one-way for your route, we confirm the drop-off location. Because the loaded trailer is heavy, plan shorter driving days, moderate speeds and a connection check at every stop.

## Related pages

- https://goodyearelitetireupland.com/u-haul/cargo-trailers/
- https://goodyearelitetireupland.com/u-haul/5x8-cargo-trailer/
- https://goodyearelitetireupland.com/u-haul/hitch-tow-package/
- https://goodyearelitetireupland.com/contact/phone-email/

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Call (909) 608-7699 or book at https://goodyearelitetireupland.com/contact/book-appointment/