Head to head
Brian James Race Sport vs Ifor Williams Business Inabox
The Brian James Race Sport is 830kg lighter empty. The Ifor Williams Business Inabox is rated 500kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams Business Inabox weighs 830kg more empty.
- Gross weight: the Ifor Williams Business Inabox is rated 500kg heavier gross.
Specifications side by side
| Brian James Race Sport | Ifor Williams Business Inabox | |
|---|---|---|
| Gross weight | 3000kg | 3500kg |
| Unladen weight | from 1070kg | 1900kg (Workshop M) |
| Payload | up to 1930kg | - |
| Internal bed | 4.5m / 5.0m / 5.5m long x 2.0m / 2.1m wide | - |
| Axles | Twin | - |
| Internal length | - | 4.45m (Workshop M) |
| Internal width | - | 2.18m |
| Overall length | - | 5.96m (Workshop M) |
Sources: Brian James Race Sport, Ifor Williams Business Inabox. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Race Sport if...
- you want one that is 830kg lighter empty
A step up from the basic A Transporter range for racers and dealers who tie cars down often and want a punched deck for extra restraint options. It sits below the Race Transporter range on price while still covering most single-car trailering needs.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Fieldfare Trailer Centre - Salisbury
- Bicester Trailer Centre - Bicester
- Trek-Trailers Three Counties - Hereford
- Formula Trailers,, Brian-James Trailers Main Dealer in the SW UK - Wellington, Poole
Buy or hire the Business Inabox if...
- you want one that is rated 500kg heavier gross
A trailer shell fitted out as a mobile workshop, shop or catering unit rather than a load carrier. Tradespeople and mobile caterers buy it to take a fitted-out workspace to a site rather than build one into a van.
Listed by
- Norfolk Trailers - Norwich
Common questions
What is the difference between the Brian James Race Sport and the Ifor Williams Business Inabox?
The Brian James Race Sport is 830kg lighter empty. The Ifor Williams Business Inabox is rated 500kg heavier gross. The Brian James Race Sport is a an open twin-axle car transporter with a fully punched steel deck; the Ifor Williams Business Inabox is a trailer-based mobile workshop, boxvan or catering/retail unit.
Which is lighter, the Brian James Race Sport or the Ifor Williams Business Inabox?
The Brian James Race Sport. It is 830kg lighter empty than the Ifor Williams Business Inabox.
Can I tow the Brian James Race Sport or the Ifor Williams Business Inabox 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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