Head to head
Ifor Williams HB403 vs Ifor Williams LM146
The Ifor Williams LM146 carries 1,932kg more and is rated 1.9 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Payload: the Ifor Williams LM146 carries 1,932kg more.
- Gross weight: the Ifor Williams LM146 is rated 1.9 tonnes heavier gross.
- Unladen weight: the Ifor Williams HB403 weighs 32kg more empty.
Specifications side by side
| Ifor Williams HB403 | Ifor Williams LM146 | |
|---|---|---|
| Gross weight | 1600kg | 3500kg |
| Unladen weight | 767kg | 735kg |
| Payload | 833kg | 2765kg |
| Internal length | 3.08m | - |
| Internal width | 1.30m | - |
| 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 HB403, Ifor Williams LM146. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HB403 if...
The smallest trailer in the HB horsebox range, bought by owners of a single horse or a couple of ponies who want the lightest legal option that can still be towed by a mid-size car.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Buy or hire the LM146 if...
- you want one that carries 1,932kg more
- you want one that is rated 1.9 tonnes heavier gross
- you want one that is 32kg 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 HB403 and the Ifor Williams LM146?
The Ifor Williams LM146 carries 1,932kg more and is rated 1.9 tonnes heavier gross. The Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer; the Ifor Williams LM146 is a a twin-axle flatbed goods trailer in the heavier-duty LM range..
Which is lighter, the Ifor Williams HB403 or the Ifor Williams LM146?
The Ifor Williams LM146. It is 32kg lighter empty than the Ifor Williams HB403.
Which carries more, the Ifor Williams HB403 or the Ifor Williams LM146?
The Ifor Williams LM146, by 1,932kg.
Can I tow the Ifor Williams HB403 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.
GetBrent is an independent directory and is not a dealer for, nor affiliated with, either manufacturer. Model and brand names are the trademarks of their owners.