Head to head
Bockmann AH 4320/30 vs Stewart GX 18-23 S
The Stewart GX 18-23 S is rated 17 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Stewart GX 18-23 S is rated 17 tonnes heavier gross.
Specifications side by side
| Bockmann AH 4320/30 | Stewart GX 18-23 S | |
|---|---|---|
| Gross weight | 3,000kg | 20,000kg |
| Payload | 2,123kg | - |
| Interior length | 4,300mm | - |
| Interior width | 2,080mm | - |
| Loading angle | 10 degrees (hydraulic tilt bed) | - |
| Body size | - | 6,700 x 2,450 x 1,500mm |
| Cubic capacity | - | 23m3 grain, 39m3 silage |
| Tare weight | - | 5,900kg |
| Axles | - | 125mm dia., 10-stud, 420x180mm brakes |
Sources: Bockmann AH 4320/30, Stewart GX 18-23 S. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the AH 4320/30 if...
A low-angle hydraulic tilt-bed car transporter for loading standard cars without ramps. It suits vehicle traders, recovery firms and enthusiasts moving one car at a time behind a family-sized tow car.
Listed by
- Manningtree Hire & Self Storage - Manningtree, Lawford
Buy or hire the GX 18-23 S if...
- you want one that is rated 17 tonnes heavier gross
An 18-23 tonne tipping trailer built for grain and silage haulage, with an easy-sheet system so one person can cover a loaded trailer without climbing on top. Its monocoque steel body gives it the extra capacity over Stewart's standard flat trailers.
Listed by
- Rising Sun Trailer Hire - York
Common questions
What is the difference between the Bockmann AH 4320/30 and the Stewart GX 18-23 S?
The Stewart GX 18-23 S is rated 17 tonnes heavier gross. The Bockmann AH 4320/30 is a twin-axle car transporter trailer; the Stewart GX 18-23 S is a twin-axle tipping grain and silage trailer with an easy-sheet cover system.
Can I tow the Bockmann AH 4320/30 or the Stewart GX 18-23 S on a car licence?
Stewart GX 18-23 S is rated over 3,500kg gross, which is beyond what a car can tow in the UK.
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