Head to head
Bockmann Grand Master SR 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
| Bockmann Grand Master SR | Stewart GX 15 FT | |
|---|---|---|
| Gross weight | 2700kg | 15,000kg |
| Payload | 1462kg | - |
| Internal length | 3900mm | - |
| Internal width | 1750mm | - |
| Internal height | 2300mm | - |
| 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: Bockmann Grand Master SR, Stewart GX 15 FT. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Grand Master SR if...
The top trim of the Master line, with a walk-in tack room and centre-post partition for owners who want more storage and easier loading than the basic Master. Suits liveries and competition riders travelling one or two larger horses.
Listed by
- Böckmann UK Trailers & Horseboxes - Cinderford, Littledean
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 Bockmann Grand Master SR and the Stewart GX 15 FT?
The Stewart GX 15 FT is rated 12.3 tonnes heavier gross. The Bockmann Grand Master SR is a larger polyester 2-horse trailer with walk-in tack room; the Stewart GX 15 FT is a twin-axle flat trailer for agricultural and general haulage use.
Can I tow the Bockmann Grand Master SR 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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