Towing is one of the primary reasons many Australians choose SUVs over other vehicle types. Whether you're pulling a caravan around the country, launching a boat at your favourite fishing spot, or hauling a trailer load of landscaping supplies, understanding the principles of safe towing will protect you, your passengers, and other road users. This comprehensive guide covers everything you need to know about towing with your SUV.
Understanding Towing Capacity
Every vehicle has a maximum towing capacity specified by the manufacturer—this is the absolute limit of what it can legally and safely tow. However, towing capacity isn't a single number; it's actually a system of interrelated limits that must all be observed.
Key Towing Specifications
- Braked Towing Capacity: Maximum trailer weight when the trailer has its own braking system
- Unbraked Towing Capacity: Maximum trailer weight without trailer brakes (typically 750kg or less)
- Gross Combination Mass (GCM): Maximum total weight of vehicle, passengers, cargo, and trailer combined
- Towball Download: Weight pressing down on the towball from the trailer coupling
- Maximum Towbar Rating: The towbar's own weight limit, which may be less than vehicle capacity
Exceeding any of these limits is illegal and dangerous. Insurance may be voided if you're involved in an accident while overloaded. Always know your vehicle's specific limits and weigh your loaded combination before towing.
Essential Towing Equipment
Safe towing requires appropriate equipment properly rated for your application. Never compromise on towing gear—the forces involved in braking and cornering with a trailer are substantial.
Towbars and Hitches
Towbars must be rated for your towing requirements and properly installed. Factory-fitted towbars are ideal; aftermarket bars should be installed by accredited fitters and comply with Australian standards. The towball must be the correct size for your trailer coupling—50mm is standard in Australia.
Trailer Brake Controllers
For trailers over 750kg, electric brakes are legally required. Your vehicle needs a brake controller to activate these brakes proportionally with your vehicle's braking. Modern controllers sense vehicle deceleration and apply appropriate trailer brake force automatically.
Safety Chains
Safety chains are mandatory on all trailers in Australia. They must be crossed under the coupling to create a cradle that catches the drawbar if the coupling fails. Chains should be rated for the trailer's weight and attached to the vehicle (not the towbar) where possible.
Mirrors
Standard mirrors rarely provide adequate rear visibility when towing wide trailers. Extended towing mirrors are legally required if your trailer is wider than your vehicle. Clip-on or replacement mirrors are available for most SUV models.
- Coupling securely locked and safety pin in place
- Safety chains crossed and attached correctly
- Jockey wheel raised and secured
- Trailer lights and brakes functioning
- Breakaway system connected (if fitted)
- Tyre pressures correct on vehicle and trailer
- Load secured and distributed correctly
- Mirrors adjusted for adequate rear visibility
Loading Your Trailer
How you load your trailer dramatically affects towing stability. Incorrect weight distribution is a leading cause of trailer sway and towing accidents.
Weight Distribution Principles
Aim for approximately 10% of the loaded trailer weight as towball download (within the vehicle's limit). This means slightly more weight should be forward of the trailer axle(s) than behind. Too little download causes instability; too much overloads the rear axle and lifts the front of your SUV.
- Place heavy items low and centered over the axle
- Position slightly more weight forward than rearward
- Secure all items to prevent shifting during travel
- Never exceed the trailer's rated capacity
Weigh your loaded combination at a public weighbridge before your first long trip with a new trailer. This confirms you're within limits and helps you understand how different loading affects weight distribution.
Safe Towing Techniques
Towing fundamentally changes how your vehicle handles. Longer stopping distances, wider turning circles, and the potential for trailer sway require adapted driving techniques.
Speed Management
Reduce speed when towing—most experts recommend staying at least 10-20 km/h below the posted limit, particularly on highways. Lower speeds reduce fuel consumption, decrease braking distances, and minimise sway risk. Many states have specific speed limits for vehicles towing trailers.
Braking Technique
Begin braking earlier than you would without a trailer. Apply brakes smoothly and progressively—sudden braking can cause the trailer to push the vehicle or induce sway. On long descents, use engine braking combined with light brake application to prevent brake fade.
Cornering
Trailers track inside the vehicle's path through corners, so take wider lines than usual. In tight spaces, the trailer may cut corners significantly—check clearance before committing. Slow down before corners, not during them.
Managing Trailer Sway
Trailer sway (fishtailing) can rapidly escalate into loss of control. If sway begins:
- Do not brake—this typically worsens sway
- Ease off the accelerator gradually
- Keep the steering wheel straight
- Allow the combination to slow naturally
- Once stable, pull over and check your load distribution
Reversing with a Trailer
Reversing a trailer requires practice. The key is understanding that steering inputs are reversed—turning your steering wheel right makes the trailer go left, and vice versa.
Start in an empty car park and practice until movements become instinctive. Use small steering inputs and move slowly. If the trailer jackknifes, pull forward and try again—there's no shame in multiple attempts, especially with longer trailers.
Legal Requirements
Australian regulations require:
- Trailers over 750kg must have their own braking system
- Safety chains are mandatory on all trailers
- Trailers must be registered and display number plates
- All lights must function correctly
- Extended mirrors are required if the trailer is wider than the vehicle
- Loads must be properly secured
Maintenance Considerations
Regular towing increases wear on your SUV's engine, transmission, brakes, and suspension. Consider more frequent servicing intervals if you tow regularly. Transmission fluid, in particular, may need more frequent replacement due to the additional heat generated when towing.
Conclusion
Towing expands your SUV's utility enormously, opening up adventures and activities that would otherwise be impossible. By understanding your vehicle's capabilities, using appropriate equipment, loading correctly, and adapting your driving technique, you can tow safely and confidently for years to come.
If you're new to towing, consider taking a towing course—many organisations offer practical training that will accelerate your learning and build confidence. The investment in proper knowledge and equipment pays dividends every time you hitch up.