Head to head
Ifor Williams LM146 vs Richardson Trailers Supreme Ultra
The Ifor Williams LM146 is 365kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Richardson Trailers Supreme Ultra weighs 365kg more empty.
Specifications side by side
| Ifor Williams LM146 | Richardson Trailers Supreme Ultra | |
|---|---|---|
| Overall length | 5.60m | 5.00 m (16 ft 5 in) |
| Unladen weight | 735kg | 1100 kg |
| Overall width | 2.10m | - |
| Bed | 4.23m / 13'9" ((internal) length); 1.98m / 6'5" ((internal) width) | - |
| Gross weight | 3500kg | - |
| Payload | 2765kg | - |
| Tyres | 195/60R12C | - |
| Maximum gross weight | - | 3200 kg |
| Internal length | - | 3.54 m (11 ft 7 in) |
| Internal width | - | 1.80 m (5 ft 11 in) |
Sources: Ifor Williams LM146, Richardson Trailers Supreme Ultra. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the LM146 if...
- you want one that is 365kg 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
Buy or hire the Supreme Ultra if...
The Supreme Ultra suits owners looking for a well-established British-built two-horse trailer able to carry a pair of taller horses, since sellers describe it as taking two horses up to about 17.2hh. As a long-running Richardson model it is more often found on the used market now than ordered new.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Common questions
What is the difference between the Ifor Williams LM146 and the Richardson Trailers Supreme Ultra?
The Ifor Williams LM146 is 365kg lighter empty. The Ifor Williams LM146 is a a twin-axle flatbed goods trailer in the heavier-duty LM range.; the Richardson Trailers Supreme Ultra is a a two-horse trailer from British manufacturer Richardson, part of its Supreme range of horse trailers..
Which is lighter, the Ifor Williams LM146 or the Richardson Trailers Supreme Ultra?
The Ifor Williams LM146. It is 365kg lighter empty than the Richardson Trailers Supreme Ultra.
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