Head to head
Humbaur Steely vs Stewart GX 18-23 S
The Stewart GX 18-23 S is rated 19,250kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Stewart GX 18-23 S is rated 19,250kg heavier gross.
Specifications side by side
| Humbaur Steely | Stewart GX 18-23 S | |
|---|---|---|
| Gross weight | 750kg | 20,000kg |
| Payload | 630kg | - |
| Inner length | 2050mm | - |
| Inner width | 1095mm | - |
| 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: Humbaur Steely, Stewart GX 18-23 S. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Steely if...
The Steely is Humbaur's budget single-axle trailer, built with a hot-dip galvanised chassis as what the manufacturer describes as an entry point into trailer ownership. It suits light garden, construction-site and hobby loads rather than heavier trade use.
Full Steely specifications →Buy or hire the GX 18-23 S if...
- you want one that is rated 19,250kg 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 Humbaur Steely and the Stewart GX 18-23 S?
The Stewart GX 18-23 S is rated 19,250kg heavier gross. The Humbaur Steely is a a small, unbraked single-axle flatbed trailer aimed at first-time buyers and light garden/site use.; 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 Humbaur Steely 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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