Tow eyes - Transpec

CapacityNZS5446:1987 clause 2.3.1• An expression of loading capacity of a coupling, or towing eye derived from thegross combination mass of all vehicles in combinationNZS5446:1987• D= value in tonnes=GCM*/4• *This value to be the lesser of (a),(b),(c) below.• Gross combination mass means:• (a) The maximum sum of the axle loadings permitted by the Heavy MotorVehicle Regulations for the towing and all towed vehicles in combination, or• (b) The sum of the gross vehicle mass of each vehicle in a combination, or• (c) The vehicle manufacturer’s gross combination mass rating for a towingvehicleEC/94/20• Pelase refer to the following website caluclator for both hinged drawbar andrigid drawbar trailers:• www.ringfeder.de• Select ‘trailer coupling and system solutions’• Select ‘guidance’13