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Brian James C4 Blue vs Stewart GX 15 FT

The Stewart GX 15 FT is rated 12.4 tonnes heavier gross.

Last reviewed 13 September 2026

Key differences

Specifications side by side

Brian James C4 BlueStewart GX 15 FT
Gross weight2,600kg15,000kg
Unladen weight695kg-
Bed length5.0m-
Bed width2.0m-
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: Brian James C4 Blue, Stewart GX 15 FT. Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the C4 Blue if...

A twin-axle open car transporter built to carry one road or track car behind a family car or 4x4. Track-day drivers and small vehicle traders hire it for moving a single car without the cost of an enclosed trailer.

Full C4 Blue specifications →

Buy or hire the GX 15 FT if...

  • you want one that is rated 12.4 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 Brian James C4 Blue and the Stewart GX 15 FT?

The Stewart GX 15 FT is rated 12.4 tonnes heavier gross. The Brian James C4 Blue is a twin-axle car transporter trailer; the Stewart GX 15 FT is a twin-axle flat trailer for agricultural and general haulage use.

Can I tow the Brian James C4 Blue 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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