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Ifor Williams GH94BT vs Stewart GX 15 FT

The Stewart GX 15 FT is rated 12.3 tonnes heavier gross.

Last reviewed 13 September 2026

Ifor Williams GH94BT
Ifor Williams GH94BT - image: Barnwell Trailers Ltd
GX 15 FT
Stewart GX 15 FT

Key differences

Specifications side by side

Ifor Williams GH94BTStewart GX 15 FT
Gross weight2700kg15,000kg
Unladen weight530kg-
Payload2170kg-
Internal bed2.79m x 1.31m-
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: Ifor Williams GH94BT, Stewart GX 15 FT. Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the GH94BT if...

Chosen over the standard GH94 by operators who want the heavier-duty BT chassis and tyres for regular loaded towing rather than occasional use, at the cost of a little unladen weight and payload.

Listed by

Full GH94BT specifications →

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

Full GX 15 FT specifications →

Common questions

What is the difference between the Ifor Williams GH94BT and the Stewart GX 15 FT?

The Stewart GX 15 FT is rated 12.3 tonnes heavier gross. The Ifor Williams GH94BT is a a braked-tandem version of the GH94 plant trailer; the Stewart GX 15 FT is a twin-axle flat trailer for agricultural and general haulage use.

Can I tow the Ifor Williams GH94BT 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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