Braked Towing Capacity Explained: A Legal Ceiling, Not a Target

A 3,500 kg tow rating tells you what the vehicle is rated to pull. It leaves another question unanswered: how much can you carry in the vehicle while towing that trailer? Add passengers, a canopy and the tow ball load, and the combination needs a second check.

The worked example is a Ford Ranger XLT V6 (MY26.50) from the June 2026 specification snapshot: braked tow 3,500 kg, tow ball maximum 350 kg, GVM 3,350 kg, GCM 6,400 kg and kerb weight 2,251 kg. For the calculation below, the loaded trailer weighs 3,500 kg, its actual ball load is 350 kg and weight distribution is inactive. These are stated example inputs, not measurements of your rig. Check the specifications for your own variant and use a weighbridge to measure it loaded for travel.

What is braked towing capacity?

Braked towing capacity is the manufacturer's maximum loaded trailer weight for towing with trailer brakes. You still need to meet the other vehicle and trailer limits. The rating alone does not establish how a particular loaded combination will handle crosswinds, braking or sudden manoeuvres.

Every vehicle actually carries two tow ratings:

The NSW Government's trailer requirements summarise ADR 38: above 750 kg GTM, brakes are required on at least one axle; above 2,000 kg GTM, brakes are required on all wheels, with a breakaway system that applies them if the trailer separates. GTM is the trailer's rated load on its wheels while coupled. It excludes the load carried by the tow vehicle through the coupling.

You'll find your braked rating in the owner's manual's towing section and on the manufacturer's spec sheet for your exact variant, engine and model year — ratings change within a single range. Check the towbar too: it has its own rated capacity stamped on a plate, and the lowest number anywhere in the chain — vehicle, towbar, ball — is the one that legally applies.

How does GCM limit a 3,500 kg trailer?

GCM limits the complete loaded combination, so the weight left for the vehicle depends on the trailer you attach. Count the tow ball load once.

Gross Combination Mass (GCM) is the manufacturer's limit for vehicle and trailer together. Ford's towing guide distinguishes the trailer load on its axles from the ball load carried by the tow vehicle. Once the vehicle is weighed hitched, adding the complete trailer weight would count that ball load twice.

For the Ranger example, load the vehicle to its 3,350 kg GVM while hitched, including the 350 kg ball load. The 3,500 kg trailer carries the remaining 3,150 kg on its axles:

3,350 kg hitched vehicle + (3,500 − 350) kg trailer axle load = 6,500 kg combined. That is 100 kg over the Ranger's 6,400 kg GCM, even though the vehicle is at GVM and the trailer is at the braked rating.

Subtracting 3,350 kg from 6,400 kg leaves 3,050 kg for the trailer axles, not a 3,050 kg total-trailer limit. The trailer's actual ball load determines how that axle allowance relates to its total mass. Reweigh after changing the load; do not assume the ball load stays fixed when you remove or move gear.

You can also start with the 3,500 kg loaded trailer and work out what remains for people, accessories and vehicle cargo:

Vehicle load allowance = the lower of GVM − kerb − actual ball load and GCM − kerb − actual loaded trailer mass. The ball load is already inside the trailer's total mass on the GCM side.

The Ranger's GVM calculation allows 3,350 − 2,251 − 350 = 749 kg. Its GCM calculation allows 6,400 − 2,251 − 3,500 = 649 kg, so GCM sets the lower allowance in this example. That 649 kg has to cover the driver, passengers, accessories and other vehicle cargo.

At that allowance the unhitched vehicle weighs 2,900 kg. Add the 350 kg ball load and the hitched vehicle weighs 3,250 kg, leaving 100 kg below GVM. The trailer axles carry 3,150 kg, bringing the combination to exactly 6,400 kg. Axle, tyre and hitch limits still need their own checks.

The tow ball maximum is a separate limit. The assumed 350 kg ball load is 10% of this trailer's 3,500 kg loaded mass and already reaches the stated Ranger limit. Moving cargo forward can change it. Use the Gross Vehicle Mass guide for the vehicle-side calculation and Aggregate Trailer Mass for the distinction between a trailer rating and its measured load.

Towing capacity chart: 3,500 kg-rated vehicles compared

Compare the same loading conditions, not just the tow ratings. These named variants retain the guide's June 2026 comparison basis, with the Triton and HiLux variant weights corrected on 26 September 2026. They are examples for the stated model years, not a list of every current specification.

The trailer axle allowance at hitched GVM is GCM minus GVM. It is not a total-trailer limit. The final column is the allowance for people, accessories and other vehicle cargo while towing a trailer loaded to the rated tow weight, using the ball load shown. It is the lower result from the GVM and GCM calculations above. Weight distribution is inactive in these illustrations; check your actual ball load against the vehicle, towbar and coupling limits.

† The Ford and Prado rows retain the June 2026 example figures. Confirm the exact variant's specifications before using them for a purchase or loading decision. In particular, the Prado row is the earlier MY25 example; later specification sheets can list a different kerb weight.

‡ The Patrol row retains the MY25 example. Nissan's MY26 specification sheet also lists these Ti mass and tow figures; that does not make the two model years interchangeable in every specification.

For the Ranger, a 3,500 kg trailer with 350 kg on the ball leaves 3,150 kg on its axles, exceeding the 3,050 kg axle allowance by 100 kg. The HiLux example has 3,180 kg of axle allowance, leaving 30 kg below GCM under the same trailer and ball assumptions. Each still needs separate axle, hitch and trailer-rating checks. The Prado's 265 kg allowance shows a different constraint: how little remains for people, accessories and vehicle cargo at the stated trailer load.

Not everything that looks the part is rated to 3,500 kg:

The Raptor's retained June 2026 example is rated 1,000 kg below the Ranger XLT. The Pajero Sport and Outlander rows likewise describe specific variants: the Outlander petrol figure does not establish the rating for an Outlander PHEV. Engine, body style and model year matter when you compare a vehicle with your loaded trailer.

Every nameplate above has a full breakdown — variants, axle limits and the GCM maths — at towing capacity by vehicle.

What should I tow vs what can I tow?

Meeting the weight ratings is one part of choosing a suitable combination. A vehicle-to-caravan weight ratio alone cannot establish stability.

The UK's Camping and Caravanning Club recommends an 85% kerb-weight match for novice car/caravan towing, subject to any lower vehicle towing limit. That is the source and setting for the often-quoted 85% figure. It is UK club guidance, not an Australian legal limit or a guarantee of a stable combination.

Applied as arithmetic to the example Ranger, 85% of its 2,251 kg kerb weight is about 1,900 kg. That does not replace its manufacturer's ratings or establish the right caravan weight for your particular setup.

For your own combination, follow the vehicle and trailer manufacturers' loading instructions and check the loaded axle and ball weights. Ford's towing guidance also calls for appropriate load distribution and keeping within each rating. A single percentage leaves those checks unanswered.

How does tow ball mass multiply on the rear axle?

The tow ball doesn't just press down on the vehicle — it hangs off a lever behind the rear axle, so the axle feels far more than the ball weight alone. Picture a seesaw with the rear axle as the pivot: the further the ball sits behind the axle, the harder it pushes the back down and lifts the front.

The lever arm is the rear overhang plus roughly 150 mm of towbar extension behind the body:

Effective rear-axle load = tow ball mass × (1 + (rear overhang + 150) ÷ wheelbase)

On the Ranger — 1,215 mm rear overhang, 3,270 mm wheelbase — the factor is 1 + (1,215 + 150) ÷ 3,270 ≈ 1.42. A full 350 kg ball load becomes just under 500 kg of effective load on the rear axle, while around 145 kg lifts off the front axle, lightening the steering exactly when you want it planted. That's a quarter of the Ranger's 1,959 kg rear axle rating consumed before a single item goes in the tray, which is why rear axle limits are routinely the first thing careful setups break.

Two working rules follow. Keep tow ball mass in the healthy band — around 8–12% of the van's loaded weight, with about 10% the usual aim — because too little is the classic trigger for sway, and a negative ball weight is worse again. And watch your hitch ride height: if it changes between trips, your load has moved, and the lever above is telling you where.

What makes a good tow vehicle beyond the rating?

Two vehicles with identical 3,500 kg ratings can behave completely differently with a van on the back — the differences live in the wheelbase, overhang, chassis, driveline and tyres.

Wheelbase

A longer wheelbase resists the seesaw effect and holds a steadier line. JD Gallant of the RV Consumer Group, in his book How to Select, Inspect, and Buy an RV, distilled accident research into a practical rule: the first 2,800 mm of wheelbase covers a 20-foot trailer, and every additional 100 mm allows about one more foot.

It's a guideline rather than a law, but it explains why long-wheelbase utes feel more settled than short SUVs behind the same van — and why a full-size American pickup, with a wheelbase far longer than anything in our chart, makes an easy tug for a heavy trailer.

Rear overhang

The shorter the distance from rear axle to ball, the smaller the lever multiplier from the section above. Purpose-built tow vehicles put the hitch as close to (or over) the rear axle as the design allows; extended-chassis utes and long towbar tongues push the other way and pay for it in rear-axle load and sway sensitivity.

Chassis

Ladder-frame (body-on-frame) vehicles, including most utes and large 4WD wagons, bolt the hitch and both axles to a steel frame, which is why heavy-duty tow ratings cluster there. Monocoque vehicles spread loads through the body shell; they tow with a lower centre of gravity and less rollover risk, but the structure limits how much lever load the rear can carry. For model-specific ball-load conditions, see the Pajero NX towing guide and the owner's manual for the vehicle's exact year.

Drive system

With a laden van pressing on the rear axle, rear-wheel drive puts the engine's effort through the wheels carrying the weight. Front-wheel drive does the opposite — drive on the lightened end — which is part of why serious tow ratings and FWD rarely mix. AWD and 4WD both help traction; just remember a raised 4WD also raises the hitch, which may need a deeper drop shank to keep the van level.

Tyres

Sidewall stiffness matters more than tread when towing near the top of your limits: soft passenger-rated sidewalls flex laterally and feed instability, which is why light-truck tyres in higher load ranges are the usual recommendation for heavy towing. When the van's hitched, add air to the rear tyres per your placard or manual to carry the extra load, and leave the fronts at standard pressure unless the manufacturer says otherwise.

Do you need a GVM or GCM upgrade to tow more?

A GCM upgrade only makes sense if it ends with a heavier, more capable tow vehicle relative to the van — if the goal is simply hanging a bigger trailer off the same vehicle, the result is usually a less stable rig, not a more capable one.

Look at what the proposed upgrade changes in your loaded combination. More permitted vehicle load and a heavier trailer are different outcomes. The 85% UK club guideline does not approve an Australian modification or establish its stability; assess the proposed vehicle, trailer and loading with the engineer responsible for the upgrade.

Be clear about what an upgrade is: a re-rating, mostly suspension hardware and paperwork. The drivetrain, brakes and chassis stay exactly as built, no more suited to harder work than they were, and manufacturer warranty on those components is generally affected. The full picture — second-stage manufacturers, state versus federal approval, and what upgrade warranties actually cover — is in our Gross Vehicle Mass guide.

See the pairing before you commit

Everything above is arithmetic you can do on paper — once. The trouble is that the inputs move: a different van, a canopy, two more passengers, a heavier ball setting, and the margin you worked out last month is fiction.

A 3,500 kg badge does not account for the bullbar, winch, canopy or people already aboard. loadmate connects your recorded vehicle and caravan loads with the tow rating, GCM, GVM and axle limits, so the carrying room is visible as the trip takes shape. Explore loadmate in the app to see what your setup leaves for the gear you still want to take. See our safety disclaimer.

Related guides

• Caravan & Towing Weights Explained — every weight term explained in one place (the best starting point)
• Gross Vehicle Mass (GVM) Explained — the vehicle-side limit that quietly eats your towing margin
• Aggregate Trailer Mass (ATM) Explained — the van-side number to match against your rating
• Gross Combination Mass (GCM) Explained — the combined ceiling that caps the pair, and why a GCM upgrade only helps if it makes the tug heavier
• Common caravanning mistakes — the loading errors that undo a well-matched rig
• Caravan water tanks — at 1 kg a litre, water is the payload item that erodes your full-tow margin fastest
• Why Your Caravan Needs Its Own Odometer and Service Log — tracking the van's own distance so brake and bearing service keeps the rating honest
• Towing capacity by vehicle — your model's real numbers: braked rating, GVM, GCM and payload at full tow