Head to head
Brian James A Transporter (A4) vs Humbaur Steely
The Brian James A Transporter (A4) is rated 1,250kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Brian James A Transporter (A4) is rated 1,250kg heavier gross.
Specifications side by side
| Brian James A Transporter (A4) | Humbaur Steely | |
|---|---|---|
| Gross weight | 2,000kg to 3,000kg depending on variant | 750kg |
| Bed | 3.7m x 1.8m up to 5.0m x 2.0m depending on variant | - |
| Brakes | Braked, tandem axle | - |
| Payload | - | 630kg |
| Inner length | - | 2050mm |
| Inner width | - | 1095mm |
Sources: Brian James A Transporter (A4), Humbaur Steely. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the A Transporter (A4) if...
- you want one that is rated 1,250kg heavier gross
One of the most common car trailers in Britain, bought by trade and private owners for moving road cars, project cars and small vans. The reason it sells is the spread of bed length and gross weight combinations, which lets you match the trailer to the tow car rather than the other way round.
Listed by
- Fieldfare Trailer Centre - Salisbury
- Bicester Trailer Centre - Bicester
- Trek-Trailers Three Counties - Hereford
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 A Transporter (A4) and the Humbaur Steely?
The Brian James A Transporter (A4) is rated 1,250kg heavier gross. The Brian James A Transporter (A4) is a open flatbed car transporter, twin axle; 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 A Transporter (A4) 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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