Head to head
Brian James A4 Transporter vs Ifor Williams GX125 HD
The Brian James A4 Transporter has a bed 84cm (3ft) longer. The Ifor Williams GX125 HD carries 510kg more and is rated 500kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Internal bed: the Brian James A4 Transporter has a bed 84cm (3ft) longer.
- Payload: the Ifor Williams GX125 HD carries 510kg more.
- Gross weight: the Ifor Williams GX125 HD is rated 500kg heavier gross.
- Unladen weight: the Brian James A4 Transporter weighs 10kg more empty.
Specifications side by side
| Brian James A4 Transporter | Ifor Williams GX125 HD | |
|---|---|---|
| Gross weight | 3000kg | 3500kg |
| Unladen weight | 770kg | 760kg |
| Payload | 2230kg | 2740kg |
| Internal bed | 4.5m x 2.0m | 3.66m x 1.57m |
| Axles | Twin axle | - |
Sources: Brian James A4 Transporter, Ifor Williams GX125 HD. 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 has a bed 84cm (3ft) longer
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 GX125 HD if...
- you want one that carries 510kg more
- you want one that is rated 500kg heavier gross
- you want one that is 10kg lighter empty
For plant hire firms carrying longer machines such as excavators with extended dipper arms or tracked dumpers that need the extra bed length over the GX105HD.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Common questions
What is the difference between the Brian James A4 Transporter and the Ifor Williams GX125 HD?
The Brian James A4 Transporter has a bed 84cm (3ft) longer. The Ifor Williams GX125 HD carries 510kg more and is rated 500kg heavier gross. 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 GX125 HD is a a longer heavy-duty plant trailer.
Which is lighter, the Brian James A4 Transporter or the Ifor Williams GX125 HD?
The Ifor Williams GX125 HD. It is 10kg lighter empty than the Brian James A4 Transporter.
Which carries more, the Brian James A4 Transporter or the Ifor Williams GX125 HD?
The Ifor Williams GX125 HD, by 510kg.
Can I tow the Brian James A4 Transporter or the Ifor Williams GX125 HD 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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