Head to head
Ifor Williams GD85 vs Stewart GX 18-23 S
The Stewart GX 18-23 S is rated 18.6 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Stewart GX 18-23 S is rated 18.6 tonnes heavier gross.
Specifications side by side
| Ifor Williams GD85 | Stewart GX 18-23 S | |
|---|---|---|
| Gross weight | 1,400kg single axle / 2,700kg twin axle | 20,000kg |
| Unladen weight | 395kg single axle / 485kg twin axle | - |
| Internal bed | 2.5m x 1.58m (8ft 2in x 5ft 2in) | - |
| Brakes | Braked, auto-reverse over-run | - |
| 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: Ifor Williams GD85, Stewart GX 18-23 S. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GD85 if...
The entry point of the Ifor Williams general duty range and one of the most common working trailers in Britain. Smallholders, gardeners and tradespeople buy it for everyday hauling without needing a heavy tow vehicle, and the twin-axle version roughly doubles the payload for a modest gain in unladen weight.
Full GD85 specifications →Buy or hire the GX 18-23 S if...
- you want one that is rated 18.6 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 Ifor Williams GD85 and the Stewart GX 18-23 S?
The Stewart GX 18-23 S is rated 18.6 tonnes heavier gross. The Ifor Williams GD85 is a general duty box trailer, single or twin axle; 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 Ifor Williams GD85 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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