Trailer weight capacity refers to the maximum load a trailer can safely carry, as determined by the manufacturer. This figure includes the weight of the trailer itself (known as the tare weight) and the load it is hauling. Exceeding this capacity can lead to mechanical failure, unsafe towing conditions, and legal issues.
To accurately calculate the trailer weight capacity, you will need to ensure all key weight measurements align with manufacturer specifications and legal limits. Use the following calculation:
Trailer Weight Capacity = ATM – Tare Weight
Ensure the towing vehicle’s capacity matches or exceeds the trailer’s ATM to maintain safe operation.
Overloading is one of the most common mistakes made by trailer owners. It not only impacts your safety but also puts undue stress on the towing vehicle and trailer. Follow these safe towing tips:
Before loading your trailer, consult the manufacturer’s specifications for GTM and ATM to stay within safe limits. You can usually find these details on a Vehicle Identification Plate (VIN Plate) attached to the trailer.
Improperly balanced loads can cause sway, poor braking performance, and difficulty in handling. Distribute the weight evenly across the trailer bed, keeping approximately 60% of the weight towards the front near the tow ball.
Equipping your trailer with high-quality accessories can support towing safety. For instance, consider adjustable tow bar tongues or jockey wheels to optimise your trailer’s stability and weigh distribution.
Loading your trailer correctly ensures stability, extends its lifespan, and minimises risks on the road. Follow these best practices:
Place the heaviest items over the axle and towards the front of the trailer. This minimises sway and enhances control while driving.
To prevent movement during transit, use tie-down points, straps, or cargo nets. Heavy-duty options such as tie-down points are highly recommended.
Be mindful of the total height and width of the trailer once loaded, as exceeding legal limits can make your setup unsafe and unlawful on public roads.
To fully embrace towing safety, it is critical to be aware of these common errors that can jeopardise your safety on the road:
Regular maintenance is essential to keep your trailer roadworthy and prevent unexpected breakdowns. Here are maintenance tips to practise:
Check your trailer’s tyres for proper inflation, even wear, and adequate tread depth. Replace tyres that show signs of significant wear or damage.
Faulty brakes are a significant safety concern, especially for heavy trailers. Use electric brakes or mechanical brake systems to enhance stopping power effectively.
Ensure wheel bearings are greased to avoid overheating. Replace bearings when needed and consider using durable options like bearings and seals designed for heavy usage.
Australia enforces stringent legal requirements to ensure the safety of trailers and towing vehicles on its roads. From registration to towing limits, it’s vital to comply with these regulations:
Your trailer must meet Australian Design Rules (ADR) for load, lighting, and axle configurations.
Match your tow vehicle’s towing capacity with the trailer’s ATM rating. Exceeding limits can result in hefty fines and safety risks.
Trailers over 750kg GTM require brake systems, such as electric or mechanical override brakes. Ensure your setup complies with this mandate for added safety.
Understanding and adhering to your trailer’s weight capacity is essential for safe towing. From calculating GTM and balancing loads to ensuring compliance with legal standards, taking a knowledgeable and proactive approach will set you up for success. Equip your trailer with high-quality components and maintain it regularly for long-term performance.
Explore durable and reliable trailer parts and accessories, from towball accessories to braking systems, to enhance towing safety and reliability.
The trailer’s weight capacity is provided by the manufacturer and can be calculated as Aggregate Trailer Mass (ATM) minus the trailer’s tare weight.
Overloading can cause tyre blowouts, brake malfunction, structural damage, and unsafe towing issues such as fishtailing.
Tow ball weight ensures the towing setup remains balanced. It helps prevent swaying and keeps the vehicle and trailer stable during transit.
Well-maintained bearings reduce the risk of overheating, extend axle life, and ensure smoother and safer towing journeys.
Trailers exceeding 750kg GTM must have a brake system, and trailers over 2,000kg must utilise electric brakes with breakaway capability.
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