Head to head
Ifor Williams HBX506 vs Ifor Williams LM146
The Ifor Williams LM146 carries 1,030kg more and is rated 900kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Payload: the Ifor Williams LM146 carries 1,030kg more.
- Gross weight: the Ifor Williams LM146 is rated 900kg heavier gross.
- Unladen weight: the Ifor Williams HBX506 weighs 130kg more empty.
Specifications side by side
| Ifor Williams HBX506 | Ifor Williams LM146 | |
|---|---|---|
| Gross weight | 2600kg | 3500kg |
| Unladen weight | 865kg | 735kg |
| Payload | 1735kg | 2765kg |
| Internal length | 3.26m | - |
| Internal width | 1.67m | - |
| Overall length | - | 5.60m |
| Overall width | - | 2.10m |
| Bed | - | 4.23m / 13'9" ((internal) length); 1.98m / 6'5" ((internal) width) |
| Tyres | - | 195/60R12C |
Sources: Ifor Williams HBX506, Ifor Williams LM146. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HBX506 if...
A mid-size horsebox for owners moving one or two horses who want the updated HBX styling and features rather than the standard HB range trailer.
Listed by
- R M Trailer Centre - Middlesbrough, North Ormesby
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Buy or hire the LM146 if...
- you want one that carries 1,030kg more
- you want one that is rated 900kg heavier gross
- you want one that is 130kg lighter empty
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 Ifor Williams HBX506 and the Ifor Williams LM146?
The Ifor Williams LM146 carries 1,030kg more and is rated 900kg heavier gross. The Ifor Williams HBX506 is a a double horsebox trailer from Ifor Williams' HBX range; the Ifor Williams LM146 is a a twin-axle flatbed goods trailer in the heavier-duty LM range..
Which is lighter, the Ifor Williams HBX506 or the Ifor Williams LM146?
The Ifor Williams LM146. It is 130kg lighter empty than the Ifor Williams HBX506.
Which carries more, the Ifor Williams HBX506 or the Ifor Williams LM146?
The Ifor Williams LM146, by 1,030kg.
Can I tow the Ifor Williams HBX506 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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