Head to head
Ifor Williams CT166 vs Ifor Williams TT3621
The Ifor Williams CT166 is 105kg lighter empty and carries 105kg more.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams TT3621 weighs 105kg more empty.
- Payload: the Ifor Williams CT166 carries 105kg more.
Specifications side by side
| Ifor Williams CT166 | Ifor Williams TT3621 | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 885kg | 990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres) |
| Payload | 2615kg | 2510kg (195/60R12C) or 2500kg (185/70R13C) |
| Internal bed | 4.87m x 1.90m | - |
| Internal length | - | 3.62m / 11'9" |
| Internal width | - | 1.95m / 6'5" |
Sources: Ifor Williams CT166, Ifor Williams TT3621. 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 is 105kg lighter empty
- you want one that carries 105kg more
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 TT3621 if...
The largest Ifor Williams tipper. A 3.6m by 1.95m body is chosen for bulky, lighter loads - green waste, clearance and bark - where volume runs out before weight does, and it is a staple of plant and tool hire fleets. Formerly sold as the TT126.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Ifor Williams CT166 and the Ifor Williams TT3621?
The Ifor Williams CT166 is 105kg lighter empty and carries 105kg more. The Ifor Williams CT166 is a a tilt-bed car and machinery transporter trailer; the Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping.
Which is lighter, the Ifor Williams CT166 or the Ifor Williams TT3621?
The Ifor Williams CT166. It is 105kg lighter empty than the Ifor Williams TT3621.
Which carries more, the Ifor Williams CT166 or the Ifor Williams TT3621?
The Ifor Williams CT166, by 105kg.
Can I tow the Ifor Williams CT166 or the Ifor Williams TT3621 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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