Enter Your Vehicle Specifications
Your first step in using LoadMate is to enter the details of your tow vehicle. Accurate vehicle data is essential for reliable weight calculations and safe towing.
The most reliable source of information is your owner’s manual, particularly the Trailer Towing section. You can also refer to Redbook.com.au for general specs, but be aware that some details — such as axle limits — may not be listed there.
Vehicle Description
This is simply a label for your own reference — for example, “2020 Toyota Prado” or “BT-50 Work Ute.””
Kerb Weight
Kerb weight (or kerb mass) is the weight of your vehicle with a full tank of fuel, but without passengers, luggage, or added accessories. It includes all standard equipment as supplied by the manufacturer.
🔍 Tip: Only have the Tare weight (which excludes a full fuel tank)? You can estimate the kerb weight:
1) Find your fuel tank capacity (in litres).
2) Multiply it by 0.79 kg/L for petrol or 0.84 kg/L for diesel.
3) Add that number to your Tare weight.
Braked Towing Capacity
Your vehicle’s Braked Towing Capacity (BTC) is the maximum trailer weight it can legally and safely tow with trailer brakes fitted.
Gross Vehicle Mass (GVM)
GVM is the maximum your vehicle can legally weigh when fully loaded — including passengers, luggage, modifications, and tow ball mass.
Gross Combination Mass (GCM)
GCM is the maximum combined weight of your fully-loaded vehicle plus your fully-loaded trailer or caravan.
Think of it as the “all-up” legal limit for your entire setup.
Front and Rear Axle Weight Ratings
These are the maximum loads allowed on your front and rear axles. You’ll often find them in the owner's manual or on the compliance plate.
✅ Tip: Rear axle limits are among the most commonly exceeded. We strongly recommend you take the time to locate and understand yours.
Max Tow Ball Mass / Trailer Tongue Load
This is the maximum vertical load your tow vehicle’s tow ball is rated to support.
🛠️ Tip: Check both your owner’s manual and your tow hitch or compliance plate — especially if you’ve installed an aftermarket towbar.
Always use the lower of the two ratings.