Does towing capacity include the caravan's weight?
Yes, all of it.
The rating covers the whole trailer: the van itself and everything packed in it.
Ball weight and GCM (Gross Combination Mass) are the two limits that sit alongside it.
Updated . 7 min read • Technical Guide
Yes. Braked towing capacity applies to the caravan's full loaded weight, its ATM (Aggregate Trailer Mass), and the brochure's tare figure does not count.
Everything packed in the van counts toward that figure: water, gas and gear included.
- Compare - the van's ATM against the braked rating (ATM is the loaded maximum, so your packing can never catch you out)
- Ball weight - also counts against the car's payload (it presses on the towbar, so it comes out of GVM before passengers)
- GCM - caps car and van together (often lower than full GVM plus the full tow rating at once)
What braked towing capacity actually measures
Braked towing capacity limits the whole trailer as it travels. That includes the van's chassis, walls and furniture, the water in the tanks, the gas in the bottles and everything in the cupboards. The rating itself is the heaviest braked trailer your car's manufacturer allows it to tow.
The confusion comes from reading the rating as an allowance for cargo, as if the caravan itself were somehow free and only the packing counted. It is the other way around. The caravan's own weight is the biggest part of the figure, and the packing rides on top of it inside the same ceiling.
The unbraked rating on the same spec sheet is a separate, much lower figure for trailers without their own brakes. In Australia any trailer over 750kg loaded must have brakes, which is why every caravan does, and why the braked figure is the one that matters here.
New to the weight terms?
ATM, tare, payload and ball weight each have a precise meaning, and the sums between them are short.Caravan weights explained walks through all of them with real numbers from real vans.
Tare is the weight you will never tow at
Brochures and sales conversations lead with tare, the van's weight as it left the factory with empty tanks and nothing packed, because it is the smallest number available. You will never tow the van at tare. The first fill of water and the first load of gear put it behind you for good.
ATM, Aggregate Trailer Mass, is the maximum the loaded van may legally weigh, set by the manufacturer and stamped on the compliance plate. That is the figure to hold against your car's braked rating, because it is the loaded worst case: if the ATM fits, nothing you legally pack can take you over the towing limit. The gap between the two figures is not small, either: on checked ranges that publish both, it typically runs around 650kg.
The same van, both numbers
- Bluewater Campers Xpedition MkII 15ft, tare
- 2,350kg
- The same van, ATM
- 3,000kg
- The difference your car has to cover
- 650kg
A car whose braked rating lands between those two numbers could hitch this van empty but not tow it loaded. Comparing against tare is exactly how that mistake gets made.
Where the ball weight goes
Ball weight, the downward push of the van's coupling on your towbar, is already part of the van's loaded weight. It sits inside the ATM, so you do not add it on top of the figure you compare against the braked rating.
It counts a second time on the car's side of the hitch, and this is the part that surprises people. Once the van is hooked up, the ball weight presses on the car, so it comes out of the car's own payload, the gap between its kerb mass and its GVM. A few hundred kilograms of ball weight is a few hundred kilograms the car can no longer carry in people, fuel and luggage.
Same kilograms, two different limits. Inside the van's ATM for the towing comparison, and against the car's GVM for the carrying one. Both have to work at once.
The combined limit that sits over both
GCM, Gross Combination Mass, is the maximum the loaded car and the loaded van may weigh together, and it applies no matter what each is rated for on its own. On many vehicles, full GVM plus the full braked towing rating adds up to more than the GCM, so the car cannot be fully loaded and towing at its maximum at the same time.
The practical sum is GCM minus what your loaded car actually weighs. Whatever is left is the real ceiling for the van, and it is often lower than the headline tow rating. That is a subtraction worth doing with a weighbridge ticket rather than a brochure figure.
Let the site run the sums for you
Pick your car and Can I tow it? checks its braked rating, ball limit and GCM against every checked range at once, or the tow calculator does the same for one van at a time.
If the car in your driveway is a RAV4, Tucson, Forester or something of that size, what a mid-size SUV can tow works the same three limits through that class and lists the vans that fit underneath them.
Towing capacity questions, answered
Does towing capacity include the weight of the caravan itself?
Yes. Towing capacity is the ceiling for the whole trailer as it rolls down the road, caravan included. The van's own structure, its fittings, its water, its gas and everything packed inside all count toward the one figure. The number to compare against your car's braked towing capacity is the van's ATM, the maximum it may legally weigh fully loaded.
Is towing capacity measured against tare or ATM?
Compare against ATM. Tare is the van's empty weight as it left the factory, and you will never tow it at that weight; the moment the tanks are filled and the cupboards are packed, tare is history. ATM is the loaded maximum the manufacturer sets, so if the ATM fits under your car's braked rating, nothing you legally pack can push you over the towing limit.
Does towing capacity include what is packed inside the caravan?
Yes. Water, gas bottles, food, bedding, tools, bikes, the annexe: all of it is part of the trailer's weight, and the trailer's weight is what the rating limits. Water is the one that surprises people, because every litre weighs one kilogram, so filling a pair of large tanks can add well over a hundred kilograms before a single bag goes in.
Does ball weight count toward towing capacity?
Ball weight is part of the van's loaded weight, so it is already inside the ATM you compare against the braked rating; it is not an extra to add on top. Where it does count separately is on the car's side: the ball weight presses down on the towbar, so it comes out of the car's own payload and GVM, before passengers and luggage. The same kilograms answer to two different limits.
My car's towing capacity is higher than the caravan's tare weight. Is that enough?
Tare under the rating proves nothing on its own, because tare is the one weight the van will never travel at. The comparison that holds up is the van's ATM against the car's braked towing capacity, and after that the combination still has to fit under the car's GCM once the car itself is loaded. A tow calculator that runs all the limits at once is the quickest way to see the full picture.
See what your car can actually tow
Start from your car and see every checked range that fits its limits, or read the weight terms end to end first.