Head to head
Brian James Box Van 600 vs Ifor Williams LM146
The Ifor Williams LM146 carries 936kg more and is rated 800kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Payload: the Ifor Williams LM146 carries 936kg more.
- Gross weight: the Ifor Williams LM146 is rated 800kg heavier gross.
Specifications side by side
| Brian James Box Van 600 | Ifor Williams LM146 | |
|---|---|---|
| Gross weight | 2700kg | 3500kg |
| Payload | 1829kg | 2765kg |
| Internal bed | 3.0m x 1.6m | - |
| Axles | Twin (12in wheels) | - |
| Overall length | - | 5.60m |
| Overall width | - | 2.10m |
| Bed | - | 4.23m / 13'9" ((internal) length); 1.98m / 6'5" ((internal) width) |
| Unladen weight | - | 735kg |
| Tyres | - | 195/60R12C |
Sources: Brian James Box Van 600, Ifor Williams LM146. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Box Van 600 if...
Bought by tradespeople and small delivery operators who need goods kept dry and out of sight rather than carried on an open flatbed. Its 2700kg rating keeps it inside the range towable by many car-derived vans.
Listed by
- Formula Trailers,, Brian-James Trailers Main Dealer in the SW UK - Wellington, Poole
Buy or hire the LM146 if...
- you want one that carries 936kg more
- you want one that is rated 800kg 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 Box Van 600 and the Ifor Williams LM146?
The Ifor Williams LM146 carries 936kg more and is rated 800kg heavier gross. The Brian James Box Van 600 is a a small enclosed twin-axle box van trailer; the Ifor Williams LM146 is a a twin-axle flatbed goods trailer in the heavier-duty LM range..
Which carries more, the Brian James Box Van 600 or the Ifor Williams LM146?
The Ifor Williams LM146, by 936kg.
Can I tow the Brian James Box Van 600 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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