Build compliance planner
Available limits, checked together.
Compare GVM, GCM, axle, tow ball download and roof limits against the information available for your build. Missing ratings or measurements stay unresolved, so you can see what needs checking before you spend anything.
Vehicle limits & starting weightManufacturer figures, or your own measured weight
What we hold is filled in below. Anything marked "not on file" needs to come off your compliance plate or out of the owner's manual before we can check it.
2 · People & cargoAdd what you plan to carry
Add only loads absent from your base mass. Confirm its fuel, occupant, tray and equipment basis. Enter 0 only when no extra load is present.
Counted at 80 kg each
1 L = 1 kg
Above fuel already included in the base mass; 0.84 kg/L planning assumption
Existing rack, tent and other roof equipment; checked against the roof limit without adding it to GVM twice.
Additional roof cargo. Exclude accessories already selected below; all roof mass also counts toward GVM.
Wheel & tyre changesOptional · include any change in assembly mass
Easy to forget and rarely small. A wheel-and-tyre upsize is five assemblies heavier, not one, and most of the gain lands on the axles rather than in the tub.
Four on the ground plus spares. The spare changes too, and it is usually the one people forget.
Typical assembly weights (wheel + tyre together, approximate — confirm with your supplier):
OEM alloy with a highway tyre 30–35 kg · aftermarket alloy with a 33″ all-terrain 45–52 kg · beadlock or steel with a 33–35″ mud-terrain 55–70 kg.
OEM alloy with a highway tyre 30–35 kg · aftermarket alloy with a 33″ all-terrain 45–52 kg · beadlock or steel with a 33–35″ mud-terrain 55–70 kg.
3 · TowingOptional · add your loaded trailer
Leave the trailer at 0 if you don't tow.
Use the measured download and applicable towing limits
4 · Accessories & modificationsOptional · include the net weight of your changes
Search products for your vehicle, or add your own modification. Use net added weight: the complete installed weight minus anything removed.