Head to head
Brian James C4 Blue vs Humbaur Steely
The Brian James C4 Blue is rated 1,850kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Brian James C4 Blue is rated 1,850kg heavier gross.
Specifications side by side
| Brian James C4 Blue | Humbaur Steely | |
|---|---|---|
| Gross weight | 2,600kg | 750kg |
| Unladen weight | 695kg | - |
| Bed length | 5.0m | - |
| Bed width | 2.0m | - |
| Payload | - | 630kg |
| Inner length | - | 2050mm |
| Inner width | - | 1095mm |
Sources: Brian James C4 Blue, Humbaur Steely. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the C4 Blue if...
- you want one that is rated 1,850kg heavier gross
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 Steely if...
The Steely is Humbaur's budget single-axle trailer, built with a hot-dip galvanised chassis as what the manufacturer describes as an entry point into trailer ownership. It suits light garden, construction-site and hobby loads rather than heavier trade use.
Full Steely specifications →Common questions
What is the difference between the Brian James C4 Blue and the Humbaur Steely?
The Brian James C4 Blue is rated 1,850kg heavier gross. The Brian James C4 Blue is a twin-axle car transporter trailer; the Humbaur Steely is a a small, unbraked single-axle flatbed trailer aimed at first-time buyers and light garden/site use..
Can I tow the Brian James C4 Blue or the Humbaur Steely 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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