Head to head
Ifor Williams CT166 vs Ifor Williams P5
The Ifor Williams CT166 carries 2,256kg more and is rated 3 tonnes heavier gross. The Ifor Williams P5 is 744kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Payload: the Ifor Williams CT166 carries 2,256kg more.
- Gross weight: the Ifor Williams CT166 is rated 3 tonnes heavier gross.
- Unladen weight: the Ifor Williams CT166 weighs 744kg more empty.
- Internal bed: the Ifor Williams CT166 has a bed 3.34m (11ft) longer.
Specifications side by side
| Ifor Williams CT166 | Ifor Williams P5 | |
|---|---|---|
| Gross weight | 3500kg | 500kg |
| Unladen weight | 885kg | 141kg |
| Payload | 2615kg | 359kg |
| Internal bed | 4.87m x 1.90m | 1.53m x 1.02m |
| Brakes | - | Unbraked |
Sources: Ifor Williams CT166, Ifor Williams P5. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the CT166 if...
- you want one that carries 2,256kg more
- you want one that is rated 3 tonnes heavier gross
- you want one that has a bed 3.34m (11ft) longer
Bought by garages, recovery operators and plant hire firms who load low vehicles or compact machinery by tilting the deck to ground level instead of driving up loading ramps. The narrower CT166 bed suits standard cars and single machines.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Buy or hire the P5 if...
- you want one that is 744kg 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 CT166 and the Ifor Williams P5?
The Ifor Williams CT166 carries 2,256kg more and is rated 3 tonnes heavier gross. The Ifor Williams P5 is 744kg lighter empty. The Ifor Williams CT166 is a a tilt-bed car and machinery transporter trailer; the Ifor Williams P5 is a the smallest unbraked domestic trailer Ifor Williams makes.
Which is lighter, the Ifor Williams CT166 or the Ifor Williams P5?
The Ifor Williams P5. It is 744kg lighter empty than the Ifor Williams CT166.
Which carries more, the Ifor Williams CT166 or the Ifor Williams P5?
The Ifor Williams CT166, by 2,256kg.
Can I tow the Ifor Williams CT166 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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