What Are Trailer House Axles Rated For? [Rating Calculation And Steps To Determine The Correct Size]




Key takeaways:

  • Trailer home axles are rated based on their weight capacity and design.
  • Two crucial ratings include GAWR (Gross Axle Weight Rating) and GVWR (Gross Vehicle Weight Rating).
  • GAWR specifies the individual weight limit for each axle, while GVWR sets the overall weight limit for the entire new trailer house.
  • It’s essential to adhere to these weight ratings to prevent problems and legal issues.

Buying mobile home axles and trailer home axles are the most confessing ones. At least, it was for me. Because markets are filled with various trailer home axles. I felt like a lost puppy the first time I searched for it. And on top of that, there are different ratings, too! What are trailer house axles rated for?

what are trailer house axles rated for

Well, those ratings basically refer to the design and axle weight capacity. Basically, those rating points to whether the axles are suitable for your trailer home or not. So, if you don’t want to feel like a lost puppy, then research those ratings.

Are mobile home axles good for trailers? Or how can you get the perfect idea of axle rating? Is it more confessing? Umm, maybe a little bit. But no worries, I’ll explain everything in this article. So, let’s dig in.

What Are Trailer House Axles Rated For?

So, what are trailer house axles rated for? These axles come with numbers that tell you how much weight they can handle without breaking a sweat time use.

First, you got the GAWR, which is like the individual weight limit for each axle. It’s like saying, “Hey, one axle, you can carry up to 6,000 to 10,000 pounds without complaining.” But remember, if your mobile home or trailer home has more axles, you must add up all their GAWRs. There are various-sized gas struts for camper trailers. They have different GAWRs. You need to know that differently before jumping into buying.

And then, there’s the GVWR, the big boss weight rating for your entire mobile home. It’s like saying, “ok, the whole thing can’t weigh more than this number, and that includes the axles, the wheels, and everything inside the mobile home.” The GVWR is always higher than the sum of the GAWRs, so you know it’s got your back.

But here’s the deal:

You got to stick to these numbers. Going over can lead to problems and even get you in trouble with the law. So, check the manufacturer’s info or talk to a mobile home expert to make sure you’re staying within those weight limits.

Understanding Trailer House Axle Weight Ratings

To figure out what is axle rating on a trailer is, you need to understand the axle weight rating. So, GAWR, which stands for Gross Axle Weight Rating, is like the limit each axle can handle.

It’s not some government rule but what your vehicle maker says it can carry. You’ll find these numbers from the manufacturer, so look there if you’re curious. Understanding this is also important while finding replacement parts. So, read attentively.

Now, GAWR can be a bit tricky on time use. There’s a number for the front axles and one for the rear, but they might be the same. If you see just one number, it means your trailer can hold that weight per axle.

This is so the people at the U.S. Department of Transportation can keep tabs on how heavy your ride is as it cruises around the country. Consider this while looking for replacement parts, too. This will also confuse can you use mobile home tires on a trailer too.

Keep in mind every state has its own rules about weight limits. So you’ve got to figure those out as a fleet manager to buy axle or replacement parts.

GAWR deals with tire size and air pressure, and it’s for single axles. Remember, there’s a separate GAWR for each axle, and the manufacturer sets these. You might see FR for front axles and RR for rear axles.

GVWR is all about how much your whole vehicle can weigh, like the chassis, body, engine, fuel, passengers, and all the stuff inside. The manufacturer sets it. Even though they’re different, they’re linked.

If you don’t have the GVWR, but you know the GAWR, you can figure out the GVWR by multiplying the GAWR by the number of axles. Simple, right? Not really, especially if you’re weak in math like me.

Trailer House Axle Rating Calculations And Examples

Trailer House Axle Rating Calculations And Examples

Wait, wait, don’t run away just seeing the word calculation. I know you don’t want to do math now. But I promise this isn’t like your test book math. It’s pretty easy compared to the test book math.

You can also find out if can you use mobile home axles on a trailer or not with this formula. You just need to remember two formulas. Which is:



Now, let’s break down it:

Step 1: Get the wheelbase length. You’ll find this number in the vehicle specs. For our example, it’s 208 inches.

Step 2: Find out how heavy the body is and where its center of gravity is. The body weighs 5,000 pounds, and its center of gravity is 28.2 inches from the rear axle. So, the distance from the front axle is 208 inches – 28.2 inches, which is 179.8 inches.

Step 3: Now, let’s figure out the weight on the rear axle. I use this formula: Weight on Rear Axle = (Body Weight x Distance from Front Axle) / Wheelbase. So, it’s (5000 pounds x 179.8 inches) / 208 inches, which gives us 4322 pounds.

Step 4: Last step! You want to know how much weight is on the front axle. To do this, I subtract the weight on the rear axle (which is 4322 pounds) from the total body weight (which is 5000 pounds). That leaves us with 678 pounds on the front axle.

So, there you go, 678 pounds on the front and 4322 pounds on the rear axle. See? It’s not that complicated.

Factors That Affect Trailer House Axle Capacity

Trailer axle capacity is fixed, but there are still some factors that affect it on time use. To make sure you move mobile home or trailer home safely and smoothly, keep these things in mind:

  1. Trailer Design: How the trailer is built matters. Some have more axles, like tandems or trims, which can haul more weight compared to singles.
  1. Axle Strength: Bigger, tougher axles can handle heavier loads. It’s like having strong muscles.
  1. Tire Size and Type: The new tires on those axles need to match the weight. Big, strong new tires can carry more.
  1. Suspension System: The way the trailer bounces (or doesn’t) is important. Air suspension is great for heavy stuff; it keeps things steady.
  1. Frame and Chassis: The trailer’s skeleton should be tough. A sturdy frame helps spread the weight and keeps the axles from getting overwhelmed.
  1. Load Balance: How you load the mobile home or trailer home onto the trailer is crucial. Spread the weight evenly, or you might push the axles too hard.
  1. Road and Weather: The road you’re on and the weather can affect what your axles can handle. Rough roads and steep hills can be tough on them.
  1. Rules and Regulations: Different places have rules about how much weight your axles can carry. Don’t go over those limits, or you’ll have legal trouble.
  1. Maintenance: Keep everything in good shape. If your axles, new tires, and other parts are well-maintained, they can do their job right.

Remember, overloading those axles is a bad idea. It can lead to trouble, like accidents or damage. So, always follow these guidelines and check what the trailer’s maker says. And watch out for local rules, too!

Types Of Trailer House Axles

You just came out of confusion about the axle rating. It’s time to run to the store, right? No, there are different types of trailer axles, too. Such as:

Types Of Trailer House Axles

Single Axles: Think of these as the solo heroes. They support the trailer’s weight alone. Simplicity.

Tandem Axles: It’s like having a backup. Two axles together can carry more weight and share the load.

Tridem Axles: Triple trouble. Three axles are working in sync, carrying even heavier loads.

Drop Axles: These are a bit lower, tucked under the trailer. Helps with balance and stability.

Torflex Axles: These have rubber torsion suspensions. They give a smoother ride and are low-maintenance.

Those types aren’t confusing, like the rating. They are just different types and have some extra features. You just need to choose depending on your needs.

How To Determine The Correct Axle Rating For Your Trailer House?[Step By Step]

Now you have the rating and the types, so your work is done. It’s kind of, but you need to know which axle your trailer needs. In order to do so, you need to go through some steps. Which is:

Determine The Correct Axle Rating For Your Trailer House

Step 1: Weigh Your Ride

First off, get the lowdown on how much your trailer house weighs. This means everything in it, from the building itself to the toaster in the kitchen. You can usually find this info in the manufacturer’s papers.

Step 2: Balance the Load

Now, think about how all that weight is spread out in your trailer. You want to know how much up front and how much is in the back. This helps you figure out the right axle rating.

Step 3: Know The Local Rules

Check out the local rule book. Different places, different rules. So make sure you’re on the right side of the law.

Step 4: Math Time

Grab your calculator because it’s math time. Use this formula: Weight on Axle = (Total Weight x Distance from the Front Axle) / Wheelbase. This fancy formula helps you split the weight just right between the front and back axles. Use it as I have explained above.

Step 5: Pick The Right Axles

Now, look at the numbers you got for each axle. Check the axle ratings from the axle maker or the trailer maker. The rating needs to be as big as or bigger than what you got from your math. That way, you know your axles can handle the load.

Step 6: Get Expert Advice

If you’re feeling a bit lost or your calculations are giving you a headache, don’t be shy to call in a pro. They’re the experts, and they can make sure your trailer house is loaded up safely.

Importance Of Proper Trailer House Axle Maintenance

Finding the right trailer axles isn’t enough. Now you need to look after it in order to have the best service. Taking care of your axles might not sound like a wild adventure, but it’s super important. You see, those axles are like the unsung heroes of your vehicle or trailer. They bear the weight, keep things rolling smoothly, and make sure you get from A to B without trouble.

So, proper axle maintenance is crucial for safety and efficiency. When you neglect them, it’s like sending your best player into a game with a broken leg. Over time, wear and tear can mess with your axles, causing accidents or breakdowns. Regular maintenance will keep the wheel bearing like new bearings.

Regular checks and maintenance, like lubrication and inspections, keep them in top shape. This not only prevents disasters on the road but also saves you money in the long run. So, give your axles some love; they’ll keep you rolling on your way with a smile on your face.

Alright, so think of legal rules and axle weight limits as the traffic cops on our road game. They’re there to keep things fair and safe. Different places have their own rulebooks, but they share some basics:

Legal Regulations And Trailer Axle Weight Limits

Axle Weight Rules: There are special rules for each axle type – steering, driving, or trailing axles. They can only handle so much weight, and that varies by where they’re positioned in the vehicle. This is an effective brake assembly, too.

Bridge Formula: In some spots, there’s this bridge formula. It looks at axle spacing and total weight. This is to stop us from putting too much weight in one spot and messing up bridges and roads.

Spreading the Load: The law might say how weight should be spread across axles to avoid overloading one axle. It’s all about being fair to those axles.

Special Cases, Special Permits: Sometimes, you have big or heavy stuff to carry. That’s when permits come into play. They let us temporarily break the usual weight rules, but only in certain situations.

Following these rules isn’t just about playing nice; it’s about staying safe and keeping the roads intact. Following those rules isn’t a hassle. So, for all you drivers out there, make sure you know the weight limits in your area. And keep the load in check for a smooth ride.

Safety Considerations When Dealing With Trailer Axle Ratings

Maintaining safety in choosing an axle is kind of tricky. But it won’t be if you follow those checklists:

Avoid Overloading: Don’t push those axles too hard. Stick to the weight limits. Overloading can lead to breakdowns or accidents. Overloading also impacts brake assembly.

Even Load Distribution: Spread the weight right. Make sure it’s balanced between the front and back axles. An uneven load can mess with your control and brake assembly.

Regular Inspections: Keep an eye on your axles. Check for wear and tear loose parts, and make sure they’re in good shape. A little maintenance goes a long way.

Legal Know-How: Understand the weight limits and laws in your area. Going over the limits can bring on fines and even legal problems.

Emergency Gear: Be prepared for the unexpected. Have the right tools and equipment to deal with axle issues on the road.

So, it’s all about playing it safe and staying within those weight limits. Overdoing it can lead to accidents, breakdowns, and even run-ins with the law. Keep things balanced, do your checks, and know the rules of the road. That’s how you roll with axle safety.

Frequently Asked Questions

How Can I Find The Axle Rating For My Trailer House?

Start by checking out the specs and manuals they provided when you got your trailer house. If you can’t find those papers, try reaching out to the manufacturer or a pro who knows their way around trailer houses.

Can I Replace A Single Damaged Axle?

Yes, you can swap out a single bum axle without messing with the others. No need to fix what ain’t broken. Just replace the bad one and get back on the road.

Can I Upgrade The Axles On My Trailer House For A Higher Weight Rating?

Yes, you can update your trailer house’s axles for a bigger weight rating, but it’s not like a quick DIY job. You’ll need a pro to make sure it’s done right, and it might involve changes to the frame and suspension, too.

Can I Exceed The Axle Rating Of My Trailer House?

No, don’t do it. Exceeding the axle rating of your trailer house is a big no-no. Those ratings are there for safety, and going over them can lead to all sorts of problems, from damaging your axles to causing accidents.


Now you understand what are trailer house axles rated for or what are mobile home axles rated for. So, use this understanding to find the correct trailer axle for your trailer home. Just keep the safety rules and local laws in mind while buying trailer Axles.

John Little

Written by

John Little

Meet John Little, the Tiny Living Guru. With two decades of hands-on experience and an architecture degree, he’s a Sustainable Housing Innovator and Tiny Home Ambassador. John’s mission: inspire eco-conscious, mobile living. Join him on this transformative journey.

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