Head to head
Ifor Williams P6 vs Stewart GX 18-23 S
The Stewart GX 18-23 S is rated 19 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Stewart GX 18-23 S is rated 19 tonnes heavier gross.
Specifications side by side
| Ifor Williams P6 | Stewart GX 18-23 S | |
|---|---|---|
| Gross weight | 1000kg | 20,000kg |
| Axles | Single | 125mm dia., 10-stud, 420x180mm brakes |
| Brakes | Braked | - |
| Size | 6ft x 4ft | - |
| Body size | - | 6,700 x 2,450 x 1,500mm |
| Cubic capacity | - | 23m3 grain, 39m3 silage |
| Tare weight | - | 5,900kg |
Sources: Ifor Williams P6, Stewart GX 18-23 S. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the P6 if...
Ifor Williams P6, carried by UK dealers and hire companies listed on GetBrent for sale. The small Ifor Williams general purpose trailer and the forerunner of the current P6e. Householders and gardeners use it for tip runs, garden waste and DIY materials behind almost any car.
Full P6 specifications →Buy or hire the GX 18-23 S if...
- you want one that is rated 19 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 P6 and the Stewart GX 18-23 S?
The Stewart GX 18-23 S is rated 19 tonnes heavier gross. The Ifor Williams P6 is a small general purpose trailer, 6ft x 4ft; 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 P6 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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