Measuring GCM
Is there a certain methodology used by the department of transport to measure GCM?
Different methods can affect if you are legal or not.
Methods.
1. Vehicle and Trailered Load are measured separately as 2 unconnected units.
2. Measured separately as 2 connected units.
3. Measured as a single connected unit.
If the Vehicle is at GVM of 3000kg. The Trailered Load is at 3500kg maximum weight. GCM is 6500kg. Tow-ball weight is 300kg
1. Legal
2. Not legal GVM exceeded by 300kg tow-ball weight
3. Legal
Move 300kg from the Vehicle to Trailered Load.
1. Not Legal. Maximum Trailered Load exceeded by 300kg.
2. Legal
3. Legal
Remove 300kg from Vehicle but not transferred to the Trailered Load.
1. Legal
2. Legal
3. Legal
The only way to be legal in all cases is to be under GCM by the Tow Ball Weight.
Let’s not get into a debate about whether Land Rover allows for Tow Ball Weight in addition to GVM.
Let’s pretend the vehicle is say, a Land Cruiser.
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