Head to head
Brian James Race Box vs Humbaur Steely
The Brian James Race Box is rated 2,250kg heavier gross and carries 1,255kg more.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Brian James Race Box is rated 2,250kg heavier gross.
- Payload: the Brian James Race Box carries 1,255kg more.
Specifications side by side
| Brian James Race Box | Humbaur Steely | |
|---|---|---|
| Gross weight | 3000kg | 750kg |
| Payload | up to 1885kg | 630kg |
| Internal width | 1.95m | - |
| Internal length | 4.0m / 4.5m / 5.0m | - |
| Axles | Twin | - |
| Inner length | - | 2050mm |
| Inner width | - | 1095mm |
Sources: Brian James Race Box, Humbaur Steely. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Race Box if...
- you want one that is rated 2,250kg heavier gross
- you want one that carries 1,255kg more
Positioned for classic car owners and smaller motorsport teams who want their car fully enclosed and weatherproof but do not need the wider bed of the Race Sport or Race Transporter ranges. The narrower internal width suits a single classic or compact race car rather than a modern GT car.
Listed by
- Formula Trailers,, Brian-James Trailers Main Dealer in the SW UK - Wellington, Poole
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 Race Box and the Humbaur Steely?
The Brian James Race Box is rated 2,250kg heavier gross and carries 1,255kg more. The Brian James Race Box is a a fully enclosed twin-axle car transporter for classics and small race cars; the Humbaur Steely is a a small, unbraked single-axle flatbed trailer aimed at first-time buyers and light garden/site use..
Which carries more, the Brian James Race Box or the Humbaur Steely?
The Brian James Race Box, by 1,255kg.
Can I tow the Brian James Race Box 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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