Spend five minutes in any caravan park and you’ll see it. Lifted 4WDs, big vans, rooftop gear, drawers, fridges and more. The problem? A lot of these setups are likely overweight and the owners don’t even realise it.
It’s surprisingly easy to exceed your vehicle’s limits once you hook up a caravan, load up the gear and head off on a trip. And it’s not just a technicality either. Being overweight can affect your insurance, handling, braking and even whether you’re legally allowed to be on the road.
So the question is – do you actually know what your setup weighs?
If you’ve spent any time towing, you’ve probably heard the terms GVM and GCM thrown around, but they’re often misunderstood.
It sounds simple enough, but where people get caught out is how quickly they reach those limits. If you’re not 100% clear on how it all works, it’s worth brushing up on it. We’ve covered it in more detail in our caravan and trailers weights explained article.
Most caravanners don’t set out to overload their vehicle; it just happens gradually. You add a bullbar, then a winch, maybe a second battery, drawers, recovery gear, a roof rack… and suddenly, you’ve eaten up a huge chunk of your vehicle’s payload before you’ve even hooked up the van.
Then there’s towball weight, which counts towards your GVM, something many people forget.
And the weight of the caravan itself? That can be another surprise. It is not uncommon for your brand-new caravan to weigh more than you expected straight off the lot – and that’s before you fill the water tanks, pack your gear and load up for a trip.
Before too long, you’re over and you wouldn’t even know it.
Even if you’re technically within your weight limits, your suspension setup plays a massive role in how safe and stable your rig feels on the road.
Sagging suspension, poor load distribution or an unsuitable setup can all lead to:
We’ve looked at this in more detail in our articles on suspension sag and trailer sway. The key takeaway? Weight is only part of the equation and how that weight is managed matters just as much.
If you’re not sure where your setup sits, there are usually a few clues. These include:
None of these are things that you want when towing a few tonnes down the highway.
Most people don’t actually know their real-world weights.
They rely on brochure figures, rough estimates or what “feels about right.” But once you factor in accessories, passengers, fuel, water and gear, those numbers can be way off.
Unfortunately, guesswork can come back to bite you – especially in an emergency situation or insurance claim.
This is why we think every caravan owner should get a proper GVM and towing assessment done. Instead of guessing, you get a clear picture of how your vehicle and caravan are actually sitting, including weight distribution, suspension performance and overall suitability for towing.
It’s not just about ticking a compliance box either. It’s about understanding how your setup behaves in the real world.
Companies like Fulcrum Suspensions offer dedicated GVM and towing assessments designed to take the guesswork out of your setup.
Rather than just a quick look-over, their process focuses on:
They also include a free suspension assessment as part of the process, which can be a useful starting point if you’re unsure where your setup stands.
You don’t need to be planning a lap of Australia to justify checking your setup.
Even a weekend away can push your vehicle closer to its limits than you think, especially once everything is loaded up and hitched. And when you’re towing a few tonnes down the highway, guessing isn’t really a great strategy.
