Head to head
Ifor Williams General Duty 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 General Duty | Stewart GX 18-23 S | |
|---|---|---|
| Gross weight | 1400kg to 2700kg depending on model | 20,000kg |
| Axles | Single or twin axle | 125mm dia., 10-stud, 420x180mm brakes |
| Internal length | 1.84m (6ft) to 3.71m (12ft 2in) | - |
| Internal width | 1.23m (4ft) to 1.71m (5ft 6in) | - |
| Body size | - | 6,700 x 2,450 x 1,500mm |
| Cubic capacity | - | 23m3 grain, 39m3 silage |
| Tare weight | - | 5,900kg |
Sources: Ifor Williams General Duty, Stewart GX 18-23 S. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the General Duty if...
Ifor Williams's entry-level flatbed range, bought by householders, gardeners and small trades for tip runs, garden waste and general loads. It is the trailer most UK hire yards keep several of, since one size or another suits almost any small job.
Listed by
- John Page Trailers Ltd - Ashford, Biddenden
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 General Duty and the Stewart GX 18-23 S?
The Stewart GX 18-23 S is rated 18.6 tonnes heavier gross. The Ifor Williams General Duty is a small flatbed/general purpose trailer range; 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 General Duty 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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