Use this form…
![Position of rear axis and wheel base.](img/wheelbase-of-truck.gif)
![Position of pay load CG from rear axis.](img/payload.jpg)
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Use the axle weights calculator to calculate the axle weights of your vehicle under various loading conditions.
This procedure can be equally applied to trailers.
For semi-trailers, it is easiest to treat the hitchpoint as the trailer's front axle group.
For tractors, the hitch load is the payload and is centred in the fifth wheel.
Note: All fields marked with (*) are mandatory.