Head to head
Equi-Trek Sonic 3,500kg vs Ifor Williams LM85
The Ifor Williams LM85 is 1,795kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Equi-Trek Sonic 3,500kg weighs 1,795kg more empty.
Specifications side by side
| Equi-Trek Sonic 3,500kg | Ifor Williams LM85 | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 2320kg | 525kg |
| Payload | - | 2975kg |
| Internal bed | - | 2.44m x 1.52m |
Sources: Equi-Trek Sonic 3,500kg, Ifor Williams LM85. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Sonic 3,500kg if...
A compact motorised horsebox pitched as easy to drive day to day, for owners of one or two horses who want a small horsebox rather than a trailer and tow car. It is one of Equi-Trek's lower-cost motorised models.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Suffolk - Bury Saint Edmunds
- Trek-Trailers Three Counties - Hereford
Buy or hire the LM85 if...
- you want one that is 1,795kg lighter empty
A compact flatbed for smallholders and tradespeople who need to move heavy but not bulky loads, such as pallets of blocks, and want maximum payload from the smallest bed in the range.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Equi-Trek Sonic 3,500kg and the Ifor Williams LM85?
The Ifor Williams LM85 is 1,795kg lighter empty. The Equi-Trek Sonic 3,500kg is a compact 3.5 tonne motorised 2-horse horsebox; the Ifor Williams LM85 is a the shortest flatbed trailer in the LM range.
Which is lighter, the Equi-Trek Sonic 3,500kg or the Ifor Williams LM85?
The Ifor Williams LM85. It is 1,795kg lighter empty than the Equi-Trek Sonic 3,500kg.
Can I tow the Equi-Trek Sonic 3,500kg or the Ifor Williams LM85 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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