Head to head
Stewart GX 15 FT vs Stewart GX 18-23 S
The Stewart GX 18-23 S is rated 5 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Stewart GX 18-23 S is rated 5 tonnes heavier gross.
Specifications side by side
| Stewart GX 15 FT | Stewart GX 18-23 S | |
|---|---|---|
| Tare weight | 3,980kg | 5,900kg |
| Gross weight | 15,000kg | 20,000kg |
| Axles | 125mm dia., 10-stud, 420x180mm brakes | 125mm dia., 10-stud, 420x180mm brakes |
| Length | 7,900-9,700mm (26-32ft) | - |
| Tyres | 385/65Rx22.5 standard, 435/50Rx19.5 flotation option | - |
| Body size | - | 6,700 x 2,450 x 1,500mm |
| Cubic capacity | - | 23m3 grain, 39m3 silage |
Sources: Stewart GX 15 FT, Stewart GX 18-23 S. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GX 15 FT if...
A 15-tonne flat trailer from Scottish maker Stewart Trailers, built for farms and hire fleets moving bulky loads such as bales or machinery. The choice of standard or flotation tyres lets it be set up for road use or softer ground.
Listed by
- Rising Sun Trailer Hire - York
Buy or hire the GX 18-23 S if...
- you want one that is rated 5 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 Stewart GX 15 FT and the Stewart GX 18-23 S?
The Stewart GX 18-23 S is rated 5 tonnes heavier gross. The Stewart GX 15 FT is a twin-axle flat trailer for agricultural and general haulage 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 Stewart GX 15 FT or the Stewart GX 18-23 S on a car licence?
Stewart GX 15 FT and Stewart GX 18-23 S are rated over 3,500kg gross, which is beyond what a car can tow in the UK.
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