Head to head
Brian James C4 Transporter vs Ifor Williams GX125 HD
The Brian James C4 Transporter is a car transporter trailer. The Ifor Williams GX125 HD is a a longer heavy-duty plant trailer.
Last reviewed 13 September 2026
Specifications side by side
| Brian James C4 Transporter | Ifor Williams GX125 HD | |
|---|---|---|
| Gross weight | 2000-2600kg (range across C4 variants) | 3500kg |
| Deck length | 12ft 2in (3.7m) loading area, up to 16ft overall | - |
| Deck width | 5ft 10in - 6ft | - |
| Axles | 2 | - |
| Ramps | 8ft loading ramps included | - |
| Unladen weight | - | 760kg |
| Payload | - | 2740kg |
| Internal bed | - | 3.66m x 1.57m |
Sources: Brian James C4 Transporter, Ifor Williams GX125 HD. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the C4 Transporter if...
A twin-axle trailer for moving a single car, van or small plant item, used by garages, racers and recovery firms. It is light enough for many family cars to tow while still carrying a saloon or hatchback on its own wheels.
Listed by
- Lancaster trailer hire - ELY
- Derby Trailer Hire Limited - Derby
Buy or hire the GX125 HD if...
For plant hire firms carrying longer machines such as excavators with extended dipper arms or tracked dumpers that need the extra bed length over the GX105HD.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Common questions
What is the difference between the Brian James C4 Transporter and the Ifor Williams GX125 HD?
The Brian James C4 Transporter is a car transporter trailer; the Ifor Williams GX125 HD is a a longer heavy-duty plant trailer.
Can I tow the Brian James C4 Transporter or the Ifor Williams GX125 HD on a car licence?
Yes, as far as the licence goes. Both are rated at or under 3,500kg gross, and a car (B) licence has covered towing up to 3,500kg since 16 December 2021. Your car still has to be rated to tow the loaded weight - check the handbook or the VIN plate.
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