Head to head
Brian James A Transporter (A4) vs Ifor Williams LM146
The Ifor Williams LM146 is rated 1.5 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams LM146 is rated 1.5 tonnes heavier gross.
Specifications side by side
| Brian James A Transporter (A4) | Ifor Williams LM146 | |
|---|---|---|
| Gross weight | 2,000kg to 3,000kg depending on variant | 3500kg |
| Bed | 3.7m x 1.8m up to 5.0m x 2.0m depending on variant | 4.23m / 13'9" ((internal) length); 1.98m / 6'5" ((internal) width) |
| Brakes | Braked, tandem axle | - |
| Overall length | - | 5.60m |
| Overall width | - | 2.10m |
| Unladen weight | - | 735kg |
| Payload | - | 2765kg |
| Tyres | - | 195/60R12C |
Sources: Brian James A Transporter (A4), Ifor Williams LM146. 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 LM146 if...
- you want one that is rated 1.5 tonnes heavier gross
The LM146 is a general-purpose flatbed aimed at landscaping, construction and plumbing trades that need a long, wide load bed with a high payload on a single 3500kg-braked chassis. It is used where loads are bulky or awkwardly shaped rather than plant machinery, which typically goes on the ramped GX range instead.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- G-Tec Trailers - Thetford, Holme Hale
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Brian James A Transporter (A4) and the Ifor Williams LM146?
The Ifor Williams LM146 is rated 1.5 tonnes heavier gross. The Brian James A Transporter (A4) is a open flatbed car transporter, twin axle; the Ifor Williams LM146 is a a twin-axle flatbed goods trailer in the heavier-duty LM range..
Can I tow the Brian James A Transporter (A4) or the Ifor Williams LM146 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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