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TJP AUTO & 4X4 GVM - GCM
CALCULATOR
Use our free GVM and GCM calculator to instantly estimate the gross vehicle mass and gross combination mass of your vehicle based on accessories and load. Perfect for owners of Toyota Land Cruiser, Ford Ranger, Isuzu D-Max, and other popular models looking to check compliance with weight regulations before traveling or hauling.
This calculator does not take into consideration individual axel load limits and is to be used as a guide only. Please read the disclaimer for the calculator.
DEFINITIONS
(GVM)Gross Vehicle Mass “GVM” Weight transmitted by all tow vehicle axles to the ground
(BTC) Braked Towing Capacity
(BALL WEIGHT)Towbar Down Force “TDF” Weight transmitted from trailer to vehicle towbar
(GCM)Gross Combination Mass “GCM” Sum of all axle loads; vehicle and trailer
(KERB) Vehicle weight specified by manufacturer (normally full fuel and Factory options)
(TARE) Vehicle weight empty
(GTM) Gross Trailer Mass Weight transmitted by all trailer axles to the ground
(ATM) Aggregate Trailer Mass Trailer mass including tow ball down force on tow vehicle
Disclaimer
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Please note that the figures provided by this calculator are estimates based on the kerb weight of the heaviest vehicle variant, where possible. Accessory weights are approximate and are to be used as a guideline only. This calculator is intended as a guide to help you understand potential vehicle load and towing dynamics based on entered data.
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The calculator automatically adjusts for the leverage effect of the ball weight by adding 15% to the ball weight when applied to the Gross Vehicle Mass (GVM) and correspondingly reducing the Aggregate Trailer Mass (ATM) for the Gross Combination Mass (GCM) calculation by the ball weight. It is crucial for users to verify all data and consult with a professional engineer or vehicle modification specialist when planning modifications that could affect vehicle performance or compliance with local regulations.
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This tool does not replace professional advice and should not be used as the sole basis for any modifications or load decisions. Users are encouraged to conduct a thorough review and seek expert consultation as necessary. The provider of this calculator disclaims any liability for decisions made based on the use of this tool.
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