A poorly loaded caravan is a disaster waiting to happen! For you to correctly load or troubleshoot overloaded caravans, you should first understand the consistency of vehicle masses. Accidents caused by overloading can easily be avoided, but on the flipside, can be fatal.
Poorly arranging items into your car and rig can significantly affect the stability of your driving and towing capacity of your vehicle. On the flipside, with a handful of minute changes, you can bring about huge changes to prevent overloading accidents effortlessly!
From winds to wet roads, many factors cause a caravan to snake. The best way to control your overloaded van when it snakes is by gradually decreasing your speed without stopping abruptly or with a sudden brake.
But this can be prevented if the weight of your caravan is below the maximum limit and if you consider that tyres expand because of too much heat due to overweight caravans. If you suspect that your tyres are too thin spread too thin because of the caravan, check at a weighbridge ASAP!
This can easily cause a fatal accident. To be safe, get off the highway without accelerating too much and repair your driving balance.
The same leads to the tow vehicle failing to brake effectively. Over time, if you continue to overload your caravans, your brakes will fail. Take it as a cue and get your rig’s weight checked immediately!
When you’re done with the indoor accessories, it is clever to take the packed caravan to a weigh bridge so you’ll know the total weight. These items are among the heaviest in your stuff - awning, gas bottles, BBQ, bedding, clothing, stored foods, fixtures that came with the caravan and those that you fixed.
De-cluttering prevents your rig from snaking when on the road.
Avoid front locker. Instead, ensure that your heaviest items are laid directly on the floor in secured boxes. Keep the heaviest items above your van’s axle to keep the caravan stable.

Signs your caravan is poorly loaded
The weight a caravan can carry depends on the axle, suspension, tyres, caravan and tow car. As a fundamental rule, caravan weight should be less than 85% of the tow car’s weight. But even if you don’t surpass this threshold, your caravan may feel overloaded if you didn’t arrange your items properly. To know if that’s the case, here are the signs that you can look for:-
Snaking or Swerving

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Tyre blowout

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Problem in controlling suspension because of speed on highway

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Reduced brake control

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Impossible to change direction instantly
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Fuel Economy
11 tips to avoid caravan overloading
Overloaded caravans badly affect the steering and balance of driving and damage the parts of a caravan in the long run. Overloading can cause significant damages because it can invert a giant vehicle within a wink too! While most amateurs pack their rigs haphazardly, remember that you must know and comply with weight rules to avoid accidents.-
Weigh EVERYTHING!

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Lessen things you want to bring to have space for what you need

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User Payload and MTPLM
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How to Ensure you have the Right Noseweight

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Use a Stabiliser
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Weight Distribution on the Roof
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Weight Distribution on the Floor and Axle

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Deciding a Permanent Storage Space for Light and Heavy Items in a Caravan

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Make sure items are secured especially when on the move
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Use an Automatic Trailer Control (ATC)
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Lightweight Replacements