Head to head
Brian James C4 Blue vs Ifor Williams GH94BT
The Ifor Williams GH94BT is 165kg lighter empty and is rated 100kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Brian James C4 Blue weighs 165kg more empty.
- Gross weight: the Ifor Williams GH94BT is rated 100kg heavier gross.
Specifications side by side
| Brian James C4 Blue | Ifor Williams GH94BT | |
|---|---|---|
| Gross weight | 2,600kg | 2700kg |
| Unladen weight | 695kg | 530kg |
| Bed length | 5.0m | - |
| Bed width | 2.0m | - |
| Payload | - | 2170kg |
| Internal bed | - | 2.79m x 1.31m |
Sources: Brian James C4 Blue, Ifor Williams GH94BT. 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 GH94BT if...
- you want one that is 165kg lighter empty
- you want one that is rated 100kg heavier gross
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
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Brian James C4 Blue and the Ifor Williams GH94BT?
The Ifor Williams GH94BT is 165kg lighter empty and is rated 100kg heavier gross. The Brian James C4 Blue is a twin-axle car transporter trailer; the Ifor Williams GH94BT is a a braked-tandem version of the GH94 plant trailer.
Which is lighter, the Brian James C4 Blue or the Ifor Williams GH94BT?
The Ifor Williams GH94BT. It is 165kg lighter empty than the Brian James C4 Blue.
Can I tow the Brian James C4 Blue or the Ifor Williams GH94BT 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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