Head to head
Richardson Trailers Supreme Treble vs Stewart GX 15 FT
The Stewart GX 15 FT is rated 12.3 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Stewart GX 15 FT is rated 12.3 tonnes heavier gross.
Specifications side by side
| Richardson Trailers Supreme Treble | Stewart GX 15 FT | |
|---|---|---|
| Gross weight | 2,700kg | 15,000kg |
| Capacity | 2 horses forward, 1 pony reversed | - |
| Unladen weight | 1,260kg | - |
| External dimensions | 5.40m long x 2.29m wide x 2.75m high | - |
| Internal dimensions | 3.54m long x 1.80m wide x 2.33m high | - |
| Length | - | 7,900-9,700mm (26-32ft) |
| Tare weight | - | 3,980kg |
| Axles | - | 125mm dia., 10-stud, 420x180mm brakes |
| Tyres | - | 385/65Rx22.5 standard, 435/50Rx19.5 flotation option |
Sources: Richardson Trailers Supreme Treble, Stewart GX 15 FT. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Supreme Treble if...
A three-berth Richardson trailer built for a household with two horses and a pony rather than a full string. The reversed pony bay keeps overall length down compared with three forward-facing berths, which suits smaller yards and tow vehicles.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Buy or hire the GX 15 FT if...
- you want one that is rated 12.3 tonnes heavier gross
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
Common questions
What is the difference between the Richardson Trailers Supreme Treble and the Stewart GX 15 FT?
The Stewart GX 15 FT is rated 12.3 tonnes heavier gross. The Richardson Trailers Supreme Treble is a trailer for two horses and a pony, one forward one reversed; the Stewart GX 15 FT is a twin-axle flat trailer for agricultural and general haulage use.
Can I tow the Richardson Trailers Supreme Treble or the Stewart GX 15 FT on a car licence?
Stewart GX 15 FT is rated over 3,500kg gross, which is beyond what a car can tow in the UK.
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