What Best U Haul Trailer Hitch Ball Size Do I Need?

What Are U Haul Trailer Ball Size and How They Work?

You can either hire professionals to help you move or you can do it yourself (DIY).

Besides being cheaper, DIY move grants you more flexibility over the whole moving process. 

But the gag is you will have to ensure that everything is in place for a seamless, efficient relocation.

An example is getting the appropriate hitch ball size for your trailer that would match the weight capacity. 

Now, following the considerable fleet of trailers that a moving company like U-Haul has, you might want to think it would be rocket science just to arrive at the weight capacity and the desired hitch ball size.

This couldn’t be more false. Every trailer at U-Haul can be towed using both the 1-7/8 inches or 2 inches ball.

The only thing you should look out for is the weight capacity.

For instance, while a smaller 4×7 trailer would only require a 2,000 lb. rated hitch ball, a heavier trailer like the Auto Transport would need at least a 5,000 lb. hitch ball. 

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Here are two things to note: 

  • 1-7/8 inches or 2 inches hitch ball packing a 5,000 lbs. weight capacity can haul every U-Haul cargo trailer.
  • The hitch ball has to equal or be more than the total towable weight if it must tow a vehicle.

Having said that, this article will go on to give a broader overview of U-Haul trailer ball size as well as sufficiently answer some frequently asked questions. 

But first, you have to know what a trailer hitch ball is.  View how to rent trailer hitches here!

What Is A Hitch Ball For a Trailer?

Also known as a ball or trailer ball, a hitch ball describes the ball-shaped mechanism that links a hitch (mounted on a vehicle) to a trailer.

As everyone in the industry knows, the hitch ball diameter is standard. The hitch ball rating and shank diameters can, however, differ. 

Please note that the hitch ball rating is just as crucial as the ratings of the receiver hitch.

So, to ensure your hitch ball is the right fit, a measurement of shank diameter and length must be taken.

As a rule, larger hitch balls featuring larger shank diameters tend to pull heavier weights. 

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How to determine the size of a hitch ball for your trailer

Three major factors determine the size of the ball for your trailer, and they are coupler size, trailer ball hole diameter, and towing capacity. 

Whatever you do, make sure these three conditions are fulfilled: 

  • Coupler size must perfectly fit your trailer ball diameter. 
  • Shank diameter must match the ball hole. 
  • Weight capacity must be sufficient to efficiently pull your trailer. 

Here’s how you determine the trailer hitch ball size:

Step 1: Match coupler size to hitch ball diameter

This is the first you do when choosing a trailer ball. Nowadays, many manufacturers input the actual ball size of the trailer on the coupler.

If yours doesn’t have one, you have to figure it out yourself. Make all required adjustments and confirm the exact match of your coupler and hitch ball before you commence towing. 

Step 2: Match shank size to hitch ball hole

In the trailer ball setup, the hitch ball fits onto the hole in the ball mount platform.

For proper functioning, you must know the size of this ball hole for you to select a hitch ball with a matching shank size.

Mismatch sizes will remove substantially from the towing efficiency. 

Step 3: Consider your towing system’s weight capacity 

Weight capacity tops the list of considerations when choosing a hitch ball or by other towing components for that matter.

A trailer’s weight rating is considered to be the ball capacity.

It should, however, be noted that this weight rating indicates only the gross trailer weight limit and has nothing to do with the tongue weight.

And as a rule, the hitch ball must have a ball capacity that exceeds the trailer’s gross weight. 

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What Is A Hitch Ball For A Trailer?

What are U Haul trailer ball size types? 

U-Haul offers four standard trailer ball sizes, which include the 1-7/8-inch (for light-duty trailers), 2-inch (for medium trailers), 2-5/16-inch (for heavy trailers), and 3-inch hitch ball (for gooseneck trailers). 

What sizes do multiple ball mount U-Haul have? 

U-Haul’s multiple ball mounts have three sizes; 1-7/8 inches, 2 inches, 2-5/16 inches ball sizes. 

Tips to select the perfect ball mount for your hitch

First things first, it is critical that you get the actual ball mount that matches your trailer. Otherwise, things can quickly go wrong with your towing connection. 

Essentially, you know you have the perfect ball mount for your vehicle if: 

  • There is a balanced connection between the U-Haul trailer and the towing vehicle. 
  • It has a weight rating that is the same as or more than the towed trailer. 

The following are things you must do to select the perfect ball mount for your hitch: 

  • Measure the hitch height

Take it from the ground to the top of the towing vehicle’s hitch receiver tube. 

  • Measure the coupler height

First thing, balance your trailer, then measure the coupler height. To do that, start from the coupler bottom to the ground. 

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  • Get the difference

Remove the measured height of the coupler from that of the hitch receiver. Whatever you get is how much drool you will require in your ball mount. 

Take note of the following: 

  • Get a ball mount with a drop if the hitch height is more than the coupler height. 
  • Get a ball mount with a rise if the coupler height is more than the hitch height. 

Popular Trailer Ball FAQ

What is U Haul trailer ball height?

The standard trailer ball height at U-Haul is anywhere between 18½ and 18¾ inches.

To get this measurement, take it from the ground to the hitch ball’s middle before connecting it to the trailer.

How many Hitch ball sizes are out there?

U-Haul offers four standard trailer ball sizes, which include the 1-7/8-inch (for light-duty trailers), 2-inch (for medium trailers), 2-5/16-inch (for heavy trailers), and 3-inch hitch ball (for gooseneck trailers). 

What is the most common trailer hitch ball size?

Easily the most common trailer hitch ball size is the 2-inch ball.

The reason for this is simple; the 2-inches is the ball of choice for a majority of the class 3 hitches, which so happens to be the most popular trailer hitch.

This does not in any way imply that it’s a universal hitch ball. Always make sure you pick the actual ball for your setup. 

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How do you measure trailer ball size?

Measuring the size of a trailer ball is not difficult, anyone can do it. Here’s a quick guide: 

Step 1: Use a ruler

Right on top of the ball, place your ruler horizontally and sight down. Ensure the ruler’s first mark aligns with the ball’s widest part on one side.

Take note of where the ruler is aligned on the other side. Typically, the trailer ball should be either 1 7/8, 2, or 2 5/16 inches.

Step 2: Get the shank diameter

Use the ruler to measure the threading aspect of the diameter of the shank. It should come to either 5/8, 3/4, 1, 1 1/4, or 1 3/8 inches.

Benefits of U Haul trailer hitch drop?

It helps to keep the trailer balanced as it is connected to the tow vehicle. Having a leveled trailer setup is critical. 

What size ball for a U-Haul 4×8 trailer?

The 1-7/8 inches and 2 inches ball can tow any U-Haul trailer, including the 4×8 trailer. It’s just the weight you have to look out for. 

Will U-Haul install a hitch ball?

Yes, they would. Any one of their 1,500 install locations will sort you out.

What fits in a 5×8 U-Haul trailer?

Typically, with its 208 cubic feet of cargo space, the 5×8 U-Haul trailer can haul a queen-sized bed, a few boxes, and other household items, and can tow around 1,800 lbs. 

Do U-Haul trailers come with a hitch?

Yes, they do. It’s what you attach underneath the tow vehicle to link it to the trailer.  

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What is the coupler height on a U-Haul trailer?

Give or take, it’s 18 inches. That’s the standard weight. 

Do U-Haul trailers come with a hitch?

Yes, they do, it’s a must. It’s what you attach underneath the tow vehicle to link it to the trailer. 

What size tow ball do I need?

The 1-7/8 inches and 2 inches ball can tow any U-Haul trailer, so there you go. It’s just the weight you should be mindful of. 

What size ball mount do I need?

As we already established earlier in this article, just subtract the coupler height from the receiver height. The difference is your answer. 

What size ball does a U-Haul car trailer take?

The 1-7/8 inches and 2 inches ball can tow any U-Haul trailer, including a car trailer. It’s just the weight you have to check.

What size ball do I need for a car trailer?

The 1-7/8 inches and 2 inches ball can tow any U-Haul trailer, including a car trailer. It’s just the weight you have to take note of.  

What size ball for U-Haul 6×12 trailer

The 1-7/8 inches and 2 inches ball can tow any U-Haul trailer, including the 6×12 trailer. It’s just the weight you have to look out for. 

What is the most common size trailer hitch ball?

Will U-Haul Install A Hitch Ball?Easily the most common trailer hitch ball size is the 2-inch ball.

The reason for this is simple; the 2-inches is the ball of choice for the majority of the class 3 hitches, which so happens to be the most popular trailer hitch.

This does not in any way imply that it’s a universal hitch ball. Always make sure you pick the actual ball for your setup.

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How to hook up a U-Haul trailer to a ball hitch?

These nine simple steps will guide you:

  1. First of all, ensure that the coupler totally encloses the ball. 
  2. Holding down the leveler using your thumb, pull up underneath the ball clamp to connect the spring. 
  3. As much as you can, tighten the handwheel, pull the trailer back and try tightening again. 
  4. Place the safety chains under the tongue linking the hitch setup to the opposing loop. 
  5. Then, pass the safety chain through the connection point to take the S-hook through one of the links. 
  6. Fasten the strap of rubber on top of the S-hook. 
  7. Again, loop the brake chain through one of the attachment points, precisely the one closest to the center. 
  8. If you have to, tighten to remove slacks. 
  9. Finally, connect the lights and check the turn signals and brakes. 

Conclusion

There you go, everything you need to know about the U-Haul Trailer Ball Size.