Head to head
Ifor Williams CT136 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 CT136 | Stewart GX 18-23 S | |
|---|---|---|
| Gross weight | 1,400kg single axle / 2,000kg twin axle / 2,600kg CT136HD | 20,000kg |
| Unladen weight | 400kg single axle / 495kg twin axle | - |
| Bed | 4.00m x 1.84m | - |
| 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 CT136, Stewart GX 18-23 S. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the CT136 if...
The accessible end of car transport, for towing a road car, a track-day car or a small classic. Motorsport and classic-car owners tend toward the twin-axle and HD versions for the higher gross weight and the tie-down provision.
Full CT136 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 CT136 and the Stewart GX 18-23 S?
The Stewart GX 18-23 S is rated 18.6 tonnes heavier gross. The Ifor Williams CT136 is a flatbed car transporter, 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 CT136 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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