Head to head
Brian James A4 Transporter vs Ifor Williams HB403
The Brian James A4 Transporter carries 1,397kg more and is rated 1.4 tonnes heavier gross. The Ifor Williams HB403 is 3kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Payload: the Brian James A4 Transporter carries 1,397kg more.
- Gross weight: the Brian James A4 Transporter is rated 1.4 tonnes heavier gross.
- Unladen weight: the Brian James A4 Transporter weighs 3kg more empty.
Specifications side by side
| Brian James A4 Transporter | Ifor Williams HB403 | |
|---|---|---|
| Gross weight | 3000kg | 1600kg |
| Unladen weight | 770kg | 767kg |
| Payload | 2230kg | 833kg |
| Internal bed | 4.5m x 2.0m | - |
| Axles | Twin axle | - |
| Internal length | - | 3.08m |
| Internal width | - | 1.30m |
Sources: Brian James A4 Transporter, Ifor Williams HB403. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the A4 Transporter if...
- you want one that carries 1,397kg more
- you want one that is rated 1.4 tonnes heavier gross
The A4 Transporter suits driving schools, small dealers and enthusiasts who need to move one car at a time behind a car-derived tow vehicle, offering a simple twin-axle bed without the cost of a beavertail or enclosed body. Its compact size makes it easier to store and manoeuvre than the longer trailers in the A Transporter range.
Listed by
- Compass Trailers - Lewes, Ringmer
- Saxons Trailers - Westerham, Biggin Hill
- R M Trailer Centre - Middlesbrough, North Ormesby
- Formula Trailers,, Brian-James Trailers Main Dealer in the SW UK - Wellington, Poole
Buy or hire the HB403 if...
- you want one that is 3kg lighter empty
The smallest trailer in the HB horsebox range, bought by owners of a single horse or a couple of ponies who want the lightest legal option that can still be towed by a mid-size car.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Brian James A4 Transporter and the Ifor Williams HB403?
The Brian James A4 Transporter carries 1,397kg more and is rated 1.4 tonnes heavier gross. The Ifor Williams HB403 is 3kg lighter empty. The Brian James A4 Transporter is a twin-axle open car transporter trailer from Brian James' A Transporter range, built for towing one car on a 4.5m bed.; the Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer.
Which is lighter, the Brian James A4 Transporter or the Ifor Williams HB403?
The Ifor Williams HB403. It is 3kg lighter empty than the Brian James A4 Transporter.
Which carries more, the Brian James A4 Transporter or the Ifor Williams HB403?
The Brian James A4 Transporter, by 1,397kg.
Can I tow the Brian James A4 Transporter or the Ifor Williams HB403 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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