Understanding how much weight can a box trailer carry Australia requires a simple math equation using the numbers on your compliance plate. Every trailer has an ATM (Aggregate Trailer Mass), which is the maximum it can weigh when fully loaded.
For a standard unbraked 6×4 trailer, the ATM is usually 750kg. To find your “payload” (how much stuff you can actually put in it), subtract the weight of the empty trailer (the Tare weight)..
If you try to carry a cubic meter of wet sand (approx. 1,600kg) in a 750kg trailer, you aren’t just breaking the law you are likely to snap the axle or blow the tires.
