Head to head
Ifor Williams TT2515 vs Stewart GX 18-23 S
The Stewart GX 18-23 S is rated 17.3 tonnes heavier gross.
Last reviewed 13 September 2026

Key differences
- Gross weight: the Stewart GX 18-23 S is rated 17.3 tonnes heavier gross.
Specifications side by side
| Ifor Williams TT2515 | Stewart GX 18-23 S | |
|---|---|---|
| Gross weight | 2700kg | 20,000kg |
| Axles | Twin | 125mm dia., 10-stud, 420x180mm brakes |
| Unladen weight | 700kg | - |
| Payload | 2000kg | - |
| Internal bed | 2.46m x 1.49m | - |
| Body size | - | 6,700 x 2,450 x 1,500mm |
| Cubic capacity | - | 23m3 grain, 39m3 silage |
| Tare weight | - | 5,900kg |
Sources: Ifor Williams TT2515, Stewart GX 18-23 S. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the TT2515 if...
A general farm and groundworks tipper for muck, aggregate or spoil, sized for towing behind a pickup or 4x4 rather than the larger 3500kg TT3017/TT3621 models.
Listed by
- Blendworth Trailers - Rowland's Castle
Buy or hire the GX 18-23 S if...
- you want one that is rated 17.3 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 TT2515 and the Stewart GX 18-23 S?
The Stewart GX 18-23 S is rated 17.3 tonnes heavier gross. The Ifor Williams TT2515 is a a twin-axle power tipping 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 Ifor Williams TT2515 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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