Guenther 6710

Unladen weight is 18,840 kg, length 11,300 mm, width 2,550 mm and wheelbase 7,450 mm. The difference between gross and unladen weight gives a payload of 160 kg.

Air brakes are required in this weight class; a mechanical overrun brake is no longer permitted above roughly 3.5 tonnes gross weight. The high unladen weight relative to the gross weight points to a very sturdy build designed around its own heavy structure rather than a large payload, as found on special trailers with heavy, permanently fitted equipment. The tow vehicle would be a lorry or tractor unit requiring category CE.

On a used example, what counts is the condition of the brake system and linings, the tightness of the air lines, and rust at the frame, drawbar and axle mounts. On a build this sturdy and heavy, it is also worth checking welds and frame reinforcements for cracking, since these carry the high structural weight. It is also worth asking for the service history of the axles and suspension, since at this unladen weight they operate permanently close to their load limit, and the small remaining payload leaves no margin at all for overloading. Any modification adding further weight to the structure would be worth flagging before purchase.