Minimum Required D-Value for GVM Vs ATM To calculate the minimum D-Value rating (kN) for couplings choose the nearest GVM of your vehicle and the nearest ATM or Tow Bar Rating the drop menu below. Select the Tow Vehicle GVM (kg)*Vehicle GVM in (kg)5000550060006500700075008000850090009500100001050011000115001200012500130001350014000145001500015500160001650017000175001800018500190001950020000ATM (kg) Tow Bar Rating*ATM / Tow Bar Rating in (kg)5001000150020002500300035004000450050005500600065007000750080008500900095001000011000120001300014000150001600017000180001900020000Minimum Required D-Value in kN
