Head to head
Brian James A Transporter (A4) vs Ifor Williams GD105
The Ifor Williams GD105 is rated 700kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams GD105 is rated 700kg heavier gross.
Specifications side by side
| Brian James A Transporter (A4) | Ifor Williams GD105 | |
|---|---|---|
| Gross weight | 2,000kg to 3,000kg depending on variant | 2,700kg |
| Brakes | Braked, tandem axle | Braked |
| Bed | 3.7m x 1.8m up to 5.0m x 2.0m depending on variant | - |
| Unladen weight | - | 585kg |
| Internal bed | - | 3.11m x 1.58m (10ft 2in x 5ft 2in) |
Sources: Brian James A Transporter (A4), Ifor Williams GD105. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the A Transporter (A4) if...
One of the most common car trailers in Britain, bought by trade and private owners for moving road cars, project cars and small vans. The reason it sells is the spread of bed length and gross weight combinations, which lets you match the trailer to the tow car rather than the other way round.
Listed by
- Fieldfare Trailer Centre - Salisbury
- Bicester Trailer Centre - Bicester
- Trek-Trailers Three Counties - Hereford
Buy or hire the GD105 if...
- you want one that is rated 700kg heavier gross
The same market as the GD85 with about 60cm more bed length, which is the difference between fitting a load and not. Landscapers and anyone moving long materials or a quad choose it for the length rather than the payload, which is unchanged.
Listed by
- Blendworth Trailers - Rowland's Castle
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Brian James A Transporter (A4) and the Ifor Williams GD105?
The Ifor Williams GD105 is rated 700kg heavier gross. The Brian James A Transporter (A4) is a open flatbed car transporter, twin axle; the Ifor Williams GD105 is a general duty box trailer, twin axle, longer bed.
Can I tow the Brian James A Transporter (A4) or the Ifor Williams GD105 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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