Head to head
Equi-Trek Sonic Five Seats 3,500kg vs Ifor Williams LM167
The Ifor Williams LM167 is 1,655kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Equi-Trek Sonic Five Seats 3,500kg weighs 1,655kg more empty.
Specifications side by side
| Equi-Trek Sonic Five Seats 3,500kg | Ifor Williams LM167 | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 2500kg | 845kg |
| Payload | - | 2655kg |
| Internal bed | - | 4.77m x 2.25m |
Sources: Equi-Trek Sonic Five Seats 3,500kg, Ifor Williams LM167. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Sonic Five Seats 3,500kg if...
A five-seat cab variant of the Sonic, aimed at families or small teams who want to travel together to competitions rather than sending a second car. It carries the same horse capacity as the standard Sonic.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Three Counties - Hereford
Buy or hire the LM167 if...
- you want one that is 1,655kg lighter empty
For operators carrying wide loads such as pallets in double rows or plant machinery, taking the LM166's length and adding the range's 2.25m wide-bed option.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Equi-Trek Sonic Five Seats 3,500kg and the Ifor Williams LM167?
The Ifor Williams LM167 is 1,655kg lighter empty. The Equi-Trek Sonic Five Seats 3,500kg is a 5-seat version of the Sonic motorised horsebox; the Ifor Williams LM167 is a a long, wide flatbed trailer.
Which is lighter, the Equi-Trek Sonic Five Seats 3,500kg or the Ifor Williams LM167?
The Ifor Williams LM167. It is 1,655kg lighter empty than the Equi-Trek Sonic Five Seats 3,500kg.
Can I tow the Equi-Trek Sonic Five Seats 3,500kg or the Ifor Williams LM167 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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