Head to head
Ifor Williams LM166 vs Ifor Williams P5
The Ifor Williams LM166 carries 2,346kg more and is rated 3 tonnes heavier gross. The Ifor Williams P5 is 654kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Payload: the Ifor Williams LM166 carries 2,346kg more.
- Gross weight: the Ifor Williams LM166 is rated 3 tonnes heavier gross.
- Unladen weight: the Ifor Williams LM166 weighs 654kg more empty.
- Internal bed: the Ifor Williams LM166 has a bed 3.24m (10.5ft) longer.
Specifications side by side
| Ifor Williams LM166 | Ifor Williams P5 | |
|---|---|---|
| Gross weight | 3500kg | 500kg |
| Unladen weight | 795kg | 141kg |
| Payload | 2705kg | 359kg |
| Internal bed | 4.77m x 1.98m | 1.53m x 1.02m |
| Brakes | - | Unbraked |
Sources: Ifor Williams LM166, Ifor Williams P5. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the LM166 if...
- you want one that carries 2,346kg more
- you want one that is rated 3 tonnes heavier gross
- you want one that has a bed 3.24m (10.5ft) longer
Bought by contractors and hauliers who regularly carry longer loads, such as fencing materials or several pallets, and need more deck length than the LM106 or LM126 provide.
Listed by
- G-Tec Trailers - Thetford, Holme Hale
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Buy or hire the P5 if...
- you want one that is 654kg lighter empty
A light general-purpose trailer for domestic buyers moving garden waste, small loads or a mower, chosen for its low unladen weight so it can be towed by almost any car.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Common questions
What is the difference between the Ifor Williams LM166 and the Ifor Williams P5?
The Ifor Williams LM166 carries 2,346kg more and is rated 3 tonnes heavier gross. The Ifor Williams P5 is 654kg lighter empty. The Ifor Williams LM166 is a a long-bed flatbed trailer; the Ifor Williams P5 is a the smallest unbraked domestic trailer Ifor Williams makes.
Which is lighter, the Ifor Williams LM166 or the Ifor Williams P5?
The Ifor Williams P5. It is 654kg lighter empty than the Ifor Williams LM166.
Which carries more, the Ifor Williams LM166 or the Ifor Williams P5?
The Ifor Williams LM166, by 2,346kg.
Can I tow the Ifor Williams LM166 or the Ifor Williams P5 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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