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APP-113-42T-91 by Napk: EU class O4 trailer with a gross vehicle weight of 29,400 kg, a length of 12,250 mm and an unladen weight of 4,950 kg
With a gross vehicle weight of 29,400 kg, the APP-113-42T-91 sits in EU trailer class O4, the heavy trailers above 10 tonnes used in commercial freight transport. At 29.4 tonnes, it sits in the middle of that class, well above the 10-tonne threshold where O4 begins.
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The trailer is 12,250 mm long and 2,590 mm wide, with an unladen weight of 4,950 kg and a payload of 24,450 kg, almost five times its own weight. Such a light build at this length points to a body optimised for low unladen weight rather than for massive frame members, the kind built for bulky rather than dense cargo.
O4 trailers are fitted with air brakes and a two-line connection, and the towing vehicle needs a matching brake system. The rig is driven on licence category CE, since the gross combination weight is well beyond the limits of the lighter categories. The towing vehicle's coupling and air supply must also suit this weight class, along with its brake force setting.
With such a high payload share, it is worth checking the frame closely for signs of past overloading: bent chassis rails, worn-out axle mounts, and cracked welds at the cross members are the telltale signs of a trailer regularly pushed to its limit. Also check: condition of the brake linings, air suspension, tyre condition, the coupling, and confirm a valid roadworthiness inspection is on file.
Sources: SpecCodex-Register: Kennwerte des Modells APP-113-42T-91
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