Most caravanners worry about weights — ATM, GVM, towball download, payload — but the truth is this: how you load your caravan matters just as much as the numbers themselves. A well‑balanced van tows smoothly, feels predictable, and gives you confidence. A poorly balanced van can feel unsettled, vague, or downright scary… even if it’s technically “legal.”

We learned this the hard way. On one of our early trips, something about the way Sunny was towing just didn’t feel right. Nothing dramatic — just a subtle heaviness, a sense that the van was “pushing” differently. It wasn’t until our second weigh‑in that we realised what had happened: our towball weight had crept up far more than we expected. We’d been loading everything at the front, thinking we were doing the right thing. Turns out, we weren’t.

This guide is everything we wish we’d known earlier — practical, real‑world advice to help you load your caravan safely, confidently, and without guesswork.

Why Caravan Weight Basics Matter More Than You Think

Most caravanners worry about weights only when something feels “off” — the van sways a little more than usual, the steering feels lighter, or the whole rig seems to push the car around on downhill runs. The truth is, weight mistakes rarely announce themselves loudly. They creep in quietly, and by the time you notice them, you’re already compensating without realising it.

And that’s the danger.

Getting your weights right isn’t about ticking compliance boxes or memorising acronyms. It’s about how your caravan behaves on the road — especially when something unexpected happens. A sudden swerve, a gust of wind, a rough patch of bitumen… these are the moments when correct loading and balanced weights make the difference between a controlled correction and a heart‑stopping fishtail.

We learned this the hard way. On one of our early trips, Sunny felt heavier and more sluggish than usual. Nothing dramatic — just a subtle shift in how the van pushed through corners and how the car responded under braking. It wasn’t until we weighed the setup properly that we realised our towball download had crept far higher than we expected. We’d been loading “sensibly”… or so we thought.

That experience changed everything.

It taught us that:

• weights aren’t intuitive
• small changes make big differences
• you can feel something is wrong long before you know why

This guide is designed to remove the guesswork.

By the end, you’ll understand the key weights, how they interact, and how to load your van so it feels predictable, stable, and safe — every time you tow.

The Key Weights That Actually Matter

Caravan weights can feel overwhelming at first — ATM, GTM, GVM, GCM, towball download… it’s a lot of letters for something that should be simple. The good news is this: you don’t need to memorise everything. You only need to understand the handful of weights that actually affect how your rig behaves on the road.

Once you know these, everything else becomes easier — loading, weighing, troubleshooting, and even choosing accessories.

Below are the weights that matter, explained in plain English.

Tare Weight (What Your Van Weighs Empty)

Tare is the weight of your caravan as it left the factory — no water, no gas, no food, no clothes, no tools, no modifications.

It’s a starting point, nothing more.

Why it matters:

It tells you how much payload you have to work with.

ATM — Aggregate Trailer Mass (Your Van’s Maximum Weight Unhitched)

ATM is the maximum legal weight of your caravan when it’s not connected to the tow vehicle. This includes everything:

• the van itself
• all your gear
• water
• gas
• accessories
• plus the towball download

If the van is sitting on its wheels and the jockey wheel, that’s ATM.

Why it matters:

If you exceed ATM, your caravan is overloaded — even before you hitch it up.

This affects insurance, compliance, and safety.

GTM — Gross Trailer Mass (Your Van’s Maximum Weight When Hitched)

GTM is the maximum weight your caravan can carry on its axle(s) when it IS connected to the tow vehicle.

When the van is hitched:

• some weight transfers to the towball
• the axle carries less
• that axle‑only limit is GTM

Why it matters:

If you exceed GTM, you overload the axle, suspension, wheels, and tyres — even if your ATM is legal.

GVM — Gross Vehicle Mass (Your Tow Vehicle Fully Loaded)

GVM is the maximum legal weight of your tow vehicle when loaded with:

• passengers
• fuel
• accessories
• luggage
• towball download

Why it matters:

Towball download counts towards your car’s GVM.

This catches a lot of people out.

GCM — Gross Combination Mass (Car + Van Together)

GCM is the maximum legal weight of your entire setup — your tow vehicle plus your caravan, fully loaded, moving as one unit.

Think of it as the “total allowable weight” of the whole rig.

GCM includes:

• the car
• the caravan
• all passengers
• all gear
• fuel
• water
• accessories
• towball download
• everything you’re carrying, front to back

Why it matters: Even if your car is under its GVM and your caravan is under its ATM, you can still be overweight once the two are combined. This is one of the most common — and most surprising — ways caravanners end up unintentionally illegal.

We ran into this ourselves. Our Everest was technically “within limits” on paper, but once we weighed the full setup, the combined mass was too close for comfort. That’s why we upgraded Ernie’s GVM and GCM — you can read the full story here: Our Ford Everest GVM/GCM Upgrade.

A proper understanding of GCM helps you avoid that trap and gives you a clearer picture of how much real‑world capacity your tow vehicle actually has.

Towball Download (The Most Important Weight of All)

Towball download is how much weight the caravan is placing onto the towball of your vehicle.

Why it matters: It directly affects:

• stability
• steering
• braking
• sway resistance
• how “planted” the car feels

Too light = sway risk.

Too heavy = overloaded rear axle + light steering + poor braking.

This is the weight you’ll adjust the most when loading your van.

Payload (Your Real‑World Carrying Capacity)

Payload is how much “stuff” you can legally carry in your caravan.

It includes:

• water
• gas
• food
• clothes
• tools
• batteries
• accessories
• modifications

Why it matters: Payload disappears faster than you think — especially once you add water and aftermarket gear.

Now you know what these numbers mean — use our free GVM & GCM Towing Safety Calculator to check whether your own setup is within its limits.

The Golden Rule of Safe Loading

If there’s one principle that tends to make caravan loading simpler and more predictable, it’s this:

In most setups, heavier items are best kept low and somewhere forward of the axle.

This isn’t a strict rule or a one‑size‑fits‑all formula — every caravan behaves a little differently, and your own setup, tow vehicle, and weight limits all play a part. But as a general guideline, this approach usually leads to a more stable, better‑balanced van.

When weight sits low, the van’s centre of gravity tends to stay more controlled. When weight sits forward of the axle, towball download is usually easier to keep within a healthy range. When weight ends up high or behind the axle, many caravanners notice their rigs feel a bit more sensitive to bumps, wind, or sudden steering inputs.

These aren’t hard‑and‑fast rules — just patterns we’ve seen repeatedly in our own travels and in conversations with other caravanners.

Keeping Heavy Items Low and Forward of the Axle

Think of your caravan like a seesaw. The axle is the pivot point. Another helpful way to think about caravan loading is to imagine the axle as a balance point. Items placed behind it can have a lever effect, while items placed forward tend to contribute to towball download.

That’s why many caravanners find it works well to:

• store heavier items low (to help keep the centre of gravity down)
• place them somewhere forward of the axle (to avoid lightening the towball too much)
• keep lighter items up high
• avoid putting dense, heavy gear in the rear tunnel boot unless the van is specifically designed for it

Again, these are general tendencies — not strict rules.

Your own van’s layout, suspension, axle position, and tow vehicle will influence what works best.

The key idea is simply this: Where you place weight can make a noticeable difference to how your rig feels on the road.

Why This Rule Works (Physics Made Simple)

A helpful way to understand caravan behaviour is to think about how weight affects balance. You don’t need to be an engineer for this — just a few simple ideas go a long way.

Generally speaking:

• Lower weight tends to help keep the centre of gravity down, which many caravanners find makes the van feel more settled.
• Weight placed forward of the axle contributes to towball download, which can help the rig feel more planted.
• Weight placed significantly behind the axle can have a lever effect, which some people notice makes their setup feel a bit more sensitive to bumps, wind, or quick steering inputs as it reduces towball weight.

Every van is different, and your own layout, suspension, axle position, and tow vehicle all influence how your setup behaves.

The key takeaway is simply that where weight sits influences how your caravan feels on the road, and small changes in placement can make a noticeable difference.

How We Fixed Our Own Towball Issue

One of the biggest lessons we learned early on was that towball download can creep up without you noticing. Nothing dramatic happens — the van just starts to feel a little heavier through corners, the steering feels slightly lighter, or the whole setup seems to push the car more than usual. That’s exactly what happened to us with Sunny.

At first, we couldn’t quite put our finger on it. Everything looked fine on paper, and we hadn’t made any major changes to our setup. But something didn’t feel quite right on the road, and that was enough for us to dig a little deeper.

What We Noticed (Before We Knew the Cause)

Looking back, there were a few subtle signs:

• the car felt like it was working harder than usual
• the steering felt a touch lighter on uneven roads
• the van seemed to “push” a little more under braking
• cornering felt slightly slower and heavier
• we noticed increased porpoising on bumpy roads

None of these were red flags on their own — just small changes that made us think, “Hmm, something’s different here.”

That’s often how weight issues show up: quietly, gradually, and only noticeable once you’ve spent enough time towing to feel the difference.

The emergency apps every caravanner should install

How We Diagnosed the Problem

When we finally weighed the setup properly, the numbers told the story. Our towball download had crept higher than we expected. Not dangerously high — just enough to change how the rig behaved.

In our case, it turned out to be a combination of:

• a few heavier items drifting forward over time
• water levels changing
• small packing habits adding up
• the natural “creep” that happens when you get comfortable with your van

None of it was intentional — it was just real‑world caravanning.

We didn’t beat ourselves up about it. We simply took it as a reminder that even small changes in loading can make a noticeable difference.

When we laid everything out, the pattern became obvious.

The Simple Adjustments That Helped

Once we understood what was happening, the fix was surprisingly straightforward. We didn’t overhaul the van or buy anything new — we just made a few gentle adjustments:

• shifting a couple of heavier items slightly rearward (but still safely within the main storage area)
• moving lighter items forward to replace them
• checking water and gas levels before towing
• being a bit more intentional about where things naturally “migrate” over time

These weren’t dramatic changes — just small tweaks that brought the towball download back into a comfortable range for our setup.

And the difference on the road was immediate. The steering felt more settled, the car braked more predictably, and the whole rig felt more balanced again.

Why We Don’t Use Weight Distribution Hitches

Weight Distribution Hitches (WDHs) are one of those topics that can turn a friendly caravan park chat into a full‑blown campfire debate. Some people love them. Some people won’t tow without them. And others — like us — have slowly backed away after seeing a few things that made us raise an eyebrow.

We’re not here to tell anyone what they should or shouldn’t use. But we are going to share why we personally decided a WDH wasn’t the right fit for our setup — and why we’re cautious about them in general.

The Good — Because Yes, They Do Have Their Place

Plenty of caravanners get good results from WDHs, especially when:

• the tow vehicle has softer rear suspension
• the van has a naturally high towball download
• the setup feels a bit light in the steering
• they want to reduce front‑to‑rear pitching

In those situations, a WDH can sometimes help redistribute weight and improve the feel of the rig.

No argument there.

The Not‑So‑Good — What Made Us Think Twice

Here’s where things get interesting.

Over the years, we’ve come across multiple reports online — forum posts, repairer comments, and owner photos — showing:

• bent A‑frames
• cracked chassis rails
• twisted drawbars
• stress fractures around the coupling
• damage that owners believe was made worse by WDH forces

Now, to be clear:

We’re not saying a WDH caused these failures. We’re saying that some owners and repairers believe the extra torsional forces from a WDH contributed to the damage.

And when you look at the mechanics, it’s not hard to see why people raise concerns. A WDH doesn’t just “redistribute weight” — it also applies leverage to the A‑frame. On smooth highways, that might be fine. But on uneven surfaces, dips, gutters, and servo driveways… those forces can spike.

Some repairers even warn that WDHs can place loads on the A‑frame that it was never designed to handle — especially on lighter‑built vans.

Again: not our claim. Just a pattern we’ve seen repeated often enough to take seriously.

Why They Didn’t Suit Our Setup

In our case, a WDH didn’t feel like the right solution. A few reasons stood out:

• Our tow vehicle (Ernie) already has a reasonably firm rear end – suspension upgrade and airbags
• Our towball download sits comfortably within the Everest’s limits
• The van behaves predictably when loaded with care
• We prefer the simplicity of a direct, unhindered connection

We travel on a lot of dirt roads and Hayman Reece even advise to
remove the WDH when doing so, and I’m sure that they advise to remove when reversing.

A hitch like the DO35 — which we use and genuinely recommend — gives you full 360‑degree articulation. That’s brilliant for uneven ground, but it also matters in a worst‑case scenario. If the caravan ends up on its side in an accident, an articulating hitch can reduce the chance of the van dragging the tow vehicle over with it. Once you add a WDH, those articulation benefits are largely lost because the bars restrict the hitch’s natural movement.

There’s also the weight penalty. A typical WDH with its bars comes in around 30–35 kg, and when you’re juggling payload limits, every kilo you bolt onto the drawbar is a kilo you can’t use elsewhere.

For us, the van felt more natural and settled without the extra hardware. But again — that’s just our experience, not a universal truth.

What We Use Instead

Rather than relying on a WDH, we focus on:

• thoughtful loading
• keeping weight within limits
• monitoring towball download
• weighing the setup periodically
• making small adjustments when something feels different

This approach has worked well for us, and it keeps our setup simple and predictable.

But the key message here is this: the best solution is the one that suits your specific rig, not someone else’s.

How to Measure Towball Download Properly

Towball download is one of those numbers that can quietly drift over time without you noticing. A few things get moved around, water levels change, a toolbox migrates forward… and suddenly the van feels a little different on the road. That’s why we like to check ours periodically — not obsessively, just enough to stay aware of how our setup is behaving.

There are a few ways to measure towball download, and each has its pros and quirks. None of them are perfect, but they all give you a useful snapshot of what’s happening at the front of your van.

The Easiest Option — A Towball Scale

We don’t own a towball scale ourselves, and we’ve never used one outside of professional weighings with people like Aaron from Weigh It Right. But many caravanners do use them, and they can be a handy way to get a quick idea of what’s happening at the front of your van.

A towball scale is essentially a portable gauge that sits under the coupling. You lower the jockey wheel onto it, and it gives you a reading. Simple in theory, and for a lot of people, that’s all they need.

From what we’ve seen and heard, towball scales are generally:

• quick
• convenient
• useful for spotting trends
• helpful when you’re experimenting with loading

They’re not precision instruments, and the readings can vary a bit depending on the surface, the height the measurement is taken, any angle, and the design of the scale. But for everyday caravanning, many people find them “accurate enough” to get a sense of whether their towball download is roughly where it should be.

One thing we’ve learned from watching professionals use them is take the reading on level ground. Even a small slope can change the number more than you’d expect.

For us, we prefer getting our setup weighed professionally when we want the full picture — but towball scales can still be a useful tool for quick checks or for understanding how your loading habits affect the front of the van.

Using a Public Weighbridge (A Bit More Involved, But Very Useful)

Some caravanners prefer to use a weighbridge to calculate towball download indirectly. It takes a little more time, but it can give you a more complete picture of your whole setup.

The general idea is:

1. Weigh the car without the van
2. Weigh the car with the van hitched
3. Subtract the two numbers

The difference is your towball download.

This method can be helpful if you want to understand how your towball weight interacts with your GVM and GCM limits.

Once you have your weighbridge numbers, plug them straight into our free GVM & GCM Towing Safety Calculator to see exactly where you stand.

Getting a Professional Weighing Done

This is our favourite option when we want the full story — not just the towball download, but how all the weights interact.

We’ve used Weigh It Right in Brisbane twice now, and each time we walked away with a much clearer understanding of how our setup behaves. Aaron doesn’t just give you numbers — he talks through what they mean, what’s working well, and what might be worth adjusting.

If you’re in South East Queensland, here’s who we trust:

What We Look For in Our Own Setup

We don’t chase a specific number — we look for a range that feels right for our van and tow vehicle. Over time, you get a sense of what’s “normal” for your setup, and that becomes your baseline.

When our towball download creeps higher or lower than usual, that’s our cue to check:

• what we’ve packed
• where things have shifted
• water levels
• gas bottles
• anything heavy that’s moved forward or back

It’s less about hitting a magic number and more about understanding how your van behaves.

Common Loading Mistakes to Avoid

Every caravanner has made at least one of these mistakes — usually more than once. We certainly have. None of them make you a bad tower; they’re just the little habits that creep in over time and quietly change how your van behaves on the road.

These aren’t hard rules or safety warnings — just patterns we’ve noticed in our own travels and in conversations with other caravanners. If you recognise yourself in any of these, you’re in good company.

Letting Heavy Items Drift Forward Over Time

This one caught us out with Sunny — not because anything physically moved on its own, but because we slowly shifted things without realising it.

Over a few trips, it’s easy for heavier gear to migrate forward simply because the front storage areas are convenient. Things like:

• adding a few extra tools to the front toolbox
• storing recovery gear in the front boot “just for now”
• topping up the front tunnel boot with odds and ends
• keeping the heavier items in the spots that are easiest to reach

Individually, none of these choices matter. But together, they can gently nudge your towball download higher than you expect.

It’s not a mistake — just one of those gradual changes that happens when you get comfortable with your van.

Storing Dense or Heavy Items Up High

We’ve all done it. You’re packing in a hurry, the overhead cupboard is empty, and that heavy bag of something “fits perfectly up there.”

In most setups, weight up high can make the van feel a little more top‑heavy or sensitive to bumps. Not dangerous — just noticeable. We try to keep the heavier stuff down low where it feels more settled.

Loading the Rear Storage Like It’s a Hungry Labrador

We don’t have a rear tunnel boot, but we do have rear storage areas — and they behave exactly like every other caravanner’s: they swallow gear like a hungry Labrador.

It’s incredibly tempting to use the back of the van as the “catch‑all” zone:

• spare hoses
• tools you don’t use often
• the “just in case” gear
• bulky items that don’t fit anywhere else

The problem isn’t the storage itself — it’s that many caravanners (us included) tend to put the heavier items back there simply because the space is convenient and out of the way.

In a lot of setups, weight right at the back can make the van feel a bit more lively or sensitive on the road. Not unsafe — just a little different to tow.

This usually happens because weight added at the rear lifts some load off the towball, and anything sitting behind the axles acts like a lever.

That rear‑biased weight can create a gentle pendulum effect, making the caravan slower to settle itself after small (and sometimes not‑so‑small) swaying movements.

We still use our rear storage, but we’re more intentional now about what actually lives back there.

Forgetting How Much Water Actually Weighs

Water is one of the easiest things to overlook when it comes to caravan loading. It feels harmless… until you remember that 1 litre = 1 kilogram, and suddenly two full tanks can add 160–200 kg to your setup without you even thinking about it.

For us, carrying full water tanks simply doesn’t make sense most of the time. We only fill up when we’re heading somewhere that doesn’t have a reliable water supply — and even then, we try to fill as close as possible to our final destination. That way we’re not hauling an extra 200 kg across half the state for no reason.

There are two big reasons we do it this way:

• Weight limits: When our tanks are full, we’re uncomfortably close to the wrong side of our legal limits (oops).
• Fuel use: An extra 200 kg means the Everest drinks noticeably more diesel. No surprise there — weight is weight.

So for us, water is something we plan intentionally rather than carrying by default. It’s not about avoiding weight — it’s about carrying it when it actually matters.

Packing “Just in Case” Gear

This one is a classic, and I reckon almost every caravanner has fallen into it at some point — us included.

I am super guilty of this and it bites you on the bum.

This is the classic caravanner trap. You start with the essentials… and before long you’ve packed:

• three spare hoses
• two extra chairs
• a backup kettle
• a second set of tools
• the “emergency” frying pan
• a tarp you haven’t used since 1998

None of this is wrong — but it all adds up. We’ve slowly learned to pack for how we actually travel, not how we might travel in a parallel universe.

Not Re‑Checking After a Big Trip or Big Shop

A long trip, a big grocery run, or a few new accessories can subtly change your weight balance. We’ve found it helpful to do a quick mental check after:

• a major restock
• adding new gear
• moving things around
• a long stretch of travel where items naturally migrate

It’s not about being obsessive — just staying aware of how your van evolves over time.

Caravan loading can feel overwhelming when you first dive into it — all the acronyms, all the limits, all the opinions, all the “you must do this” advice shouted across Facebook groups. But once you strip away the noise, it really comes down to understanding how your setup behaves and making small, thoughtful adjustments over time.

We’ve made mistakes. We’ve learned things the hard way. We’ve shifted gear around, weighed the van, re‑weighed it, and then moved things again. And honestly? That’s caravanning. It’s not about getting everything perfect — it’s about getting familiar with your own rig and building confidence one trip at a time.

If there’s one thing we hope you take away from this guide, it’s that you don’t need to be an engineer to tow safely. You just need to:

• stay aware of where your weight sits
• understand the basics of towball download
• check your numbers occasionally
• and pay attention to how your rig feels on the road

Your caravan will talk to you. Not literally (that would be weird), but through little cues — the way it corners, how it brakes, how settled it feels behind the car. Over time, you’ll get to know those cues like second nature.

And remember: every caravanner is learning. Even the ones who sound like experts at happy hour.

We’re all just trying to get from A to B safely, comfortably, and with enough snacks to survive the drive.

FAQ’s

We’d Love to Hear From You

Every caravanner has a story about loading mistakes, towball surprises, or that one trip where everything felt “off” until they figured out why. If you’ve had a moment like that — or if you’ve learned something the hard way like we have — share it in the comments below.

Your experience might be exactly what another traveller needs to read before their next trip.

And if you’ve got tips, tricks, or clever loading hacks that work for your setup, we’d love to hear those too. The Retired Rascals community is all about learning from each other and making the road a little safer (and a lot more fun) for everyone.