Before towing a trailer anywhere in Perth or across Western Australia, a proper safety check can prevent breakdowns, fines and serious accidents. Trailers are often used for work, boating, caravanning and equipment transport, yet they are one of the most overlooked parts of vehicle safety.
Whether you tow daily or only occasionally, this pre-trip checklist helps ensure your trailer is safe, compliant and ready for WA road conditions.
Trailer Coupling and Tow Hitch
The coupling is the most critical connection point between your trailer and vehicle.
Ensure the coupling is fully seated on the tow ball and locked securely
Check the coupling cannot be lifted off the ball by hand
Inspect for cracks, excessive wear or corrosion
Confirm the tow ball size matches the coupling rating
Attach safety chains correctly, crossing them under the drawbar and securing them to rated mounting points
Incorrect or worn couplings are a leading cause of trailer detachments on Perth roads.
Trailer Brakes
If your trailer is fitted with brakes, they must operate correctly before towing.
Check brake cables, hydraulic lines or electric wiring for damage
Test the brake controller inside the tow vehicle
Ensure breakaway systems are connected and operational
Listen for grinding or dragging noises when moving slowly
WA regulations require braking systems based on trailer weight, making this check essential for both safety and compliance.
Tyres and Wheels
Trailer tyres often fail due to age rather than tread depth.
Check tyre pressure on all wheels, including the spare
Inspect sidewalls for cracking, bulges or flat spots
Confirm tyres are rated for the trailer’s load capacity
Check wheel nuts are tightened correctly
Spin wheels to listen for bearing noise or resistance
Perth heat, long distances and rough roads place additional stress on trailer tyres.
Wheel Bearings
Wheel bearing failure is one of the most common causes of roadside trailer breakdowns.
Check for excessive wheel movement
Listen for rumbling or grinding sounds
Look for grease leaks around hubs
Ensure bearing protectors are intact
If bearings feel hot after a short drive, stop immediately and inspect them.
Trailer Lights and Electrical Connections
Faulty trailer lights are one of the most common reasons trailers are defected in Perth.
Test brake lights, tail lights, indicators and number plate lights
Inspect wiring plugs for corrosion or loose pins
Ensure lights are sealed against dust and water
Confirm lights are visible and not blocked by the load
Always test lights with the trailer connected and the vehicle running.
Load Security and Weight Distribution
Incorrect loading affects braking, handling and stability.
Ensure the trailer load does not exceed its rated capacity
Distribute weight evenly, with slightly more weight toward the front
Secure loads with rated straps or chains
Check gates, ramps and toolboxes are locked or pinned
Ensure nothing can move during braking or cornering
Poor load balance is a major cause of trailer sway and loss of control.
Suspension and Axles
Suspension components endure constant stress on WA roads.
Inspect leaf springs, shackles and mounting points
Check for cracked welds or bent components
Ensure axles are straight and properly aligned
Look for uneven tyre wear
Suspension issues can worsen quickly if ignored.
Registration and Compliance
Before towing, confirm your trailer meets WA legal requirements.
Check registration status if applicable
Ensure the VIN or ID plate is legible
Confirm safety chains are rated and compliant
Verify brake requirements based on trailer weight
Non-compliant trailers can lead to fines and insurance issues.
Final Walk-Around Check
Before driving off, complete a final visual inspection.
Check coupling, safety chains and electrical plug
Ensure the jockey wheel is fully raised and locked
Confirm the handbrake is released
Walk around the trailer and recheck lights
This final step often catches simple issues that could cause serious problems.
When to Replace Trailer Parts
If any components appear worn or damaged, replace them before towing. Trailer parts are far cheaper than roadside recovery, vehicle damage or accidents.
High-wear items include wheel bearings, brake components, couplings, safety chains, lights and tyres.
Need Trailer Parts or Expert Advice in Perth?
If you are unsure about your trailer’s condition or need replacement parts, professional advice can save time and prevent costly mistakes.
Martin’s Trailer Parts supplies quality trailer axles, brakes, couplings, bearings, suspension components and electrical parts across Perth, with locations in Bayswater, O’Connor and Wangara.
For expert advice or parts availability, contact sales@trailerparts.net.au in our contact page or visit your nearest store today.