Driving and operating 155The permissible gross train weightmust not be exceeded. This weight isspecified on the identification plate3 206.Vertical coupling loadThe vertical coupling load is the loadexerted by the trailer on the couplingball. It can be varied by changing theweight distribution when loading thetrailer.The maximum permissible verticalcoupling load (75 kg) is specified onthe towing equipment identificationplate and in the vehicle documentsAlways aim for the maximum load,especially in the case of heavytrailers. The vertical coupling loadshould never fall below 25 kg.Rear axle loadWhen the trailer is coupled and thetowing vehicle fully loaded, thepermissible rear axle load (seeidentification plate or vehicledocuments) may be exceeded by80 kg (vehicles with LPG system:110 kg), the gross vehicle weightrating may be exceeded by 70 kg(vehicles with LPG system: 95 kg). Ifthe permissible rear axle load isexceeded, a maximum speed of60 mph applies.Towing equipmentCautionWhen operating without a trailer,remove the coupling ball bar.Stowage of the detachablecoupling ball barThe bag with the coupling ball bar isstowed in the rear stowagecompartment on the floor.Run the strap through the lashing eyeand tighten the strap to secure thebag.
