Head to head
Brian James Race Box vs Ifor Williams P5
The Brian James Race Box is rated 2.5 tonnes heavier gross and carries 1,526kg more.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Brian James Race Box is rated 2.5 tonnes heavier gross.
- Payload: the Brian James Race Box carries 1,526kg more.
Specifications side by side
| Brian James Race Box | Ifor Williams P5 | |
|---|---|---|
| Gross weight | 3000kg | 500kg |
| Payload | up to 1885kg | 359kg |
| Internal width | 1.95m | - |
| Internal length | 4.0m / 4.5m / 5.0m | - |
| Axles | Twin | - |
| Unladen weight | - | 141kg |
| Internal bed | - | 1.53m x 1.02m |
| Brakes | - | Unbraked |
Sources: Brian James Race Box, Ifor Williams P5. 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 2.5 tonnes heavier gross
- you want one that carries 1,526kg 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 P5 if...
A light general-purpose trailer for domestic buyers moving garden waste, small loads or a mower, chosen for its low unladen weight so it can be towed by almost any car.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Common questions
What is the difference between the Brian James Race Box and the Ifor Williams P5?
The Brian James Race Box is rated 2.5 tonnes heavier gross and carries 1,526kg more. The Brian James Race Box is a a fully enclosed twin-axle car transporter for classics and small race cars; the Ifor Williams P5 is a the smallest unbraked domestic trailer Ifor Williams makes.
Which carries more, the Brian James Race Box or the Ifor Williams P5?
The Brian James Race Box, by 1,526kg.
Can I tow the Brian James Race Box or the Ifor Williams P5 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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