A calculator on vanlifemag.de works out how roof tents, rear racks and canisters distribute weight between the front and rear axles of a motorhome or camper van. The tool applies the lever principle: the rear-axle share equals the load's weight multiplied by its distance from the front axle and divided by the wheelbase. Permissible values come from the vehicle registration document: gross vehicle weight in field F.2, axle loads in fields 8.1 and 8.2. The calculator does not cover roof load limits or lateral stability, and it does not replace weighing a fully loaded vehicle. Data is current as of November 2026.
