Head to head
Ifor Williams CT166 vs Ifor Williams GD85
The Ifor Williams CT166 is rated 2.1 tonnes heavier gross and has a bed 2.37m (8ft) longer. The Ifor Williams GD85 is 490kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams CT166 is rated 2.1 tonnes heavier gross.
- Unladen weight: the Ifor Williams CT166 weighs 490kg more empty.
- Internal bed: the Ifor Williams CT166 has a bed 2.37m (8ft) longer.
Specifications side by side
| Ifor Williams CT166 | Ifor Williams GD85 | |
|---|---|---|
| Gross weight | 3500kg | 1,400kg single axle / 2,700kg twin axle |
| Unladen weight | 885kg | 395kg single axle / 485kg twin axle |
| Internal bed | 4.87m x 1.90m | 2.5m x 1.58m (8ft 2in x 5ft 2in) |
| Payload | 2615kg | - |
| Brakes | - | Braked, auto-reverse over-run |
Sources: Ifor Williams CT166, Ifor Williams GD85. 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 rated 2.1 tonnes heavier gross
- you want one that has a bed 2.37m (8ft) 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 GD85 if...
- you want one that is 490kg lighter empty
The entry point of the Ifor Williams general duty range and one of the most common working trailers in Britain. Smallholders, gardeners and tradespeople buy it for everyday hauling without needing a heavy tow vehicle, and the twin-axle version roughly doubles the payload for a modest gain in unladen weight.
Full GD85 specifications →Common questions
What is the difference between the Ifor Williams CT166 and the Ifor Williams GD85?
The Ifor Williams CT166 is rated 2.1 tonnes heavier gross and has a bed 2.37m (8ft) longer. The Ifor Williams GD85 is 490kg lighter empty. The Ifor Williams CT166 is a a tilt-bed car and machinery transporter trailer; the Ifor Williams GD85 is a general duty box trailer, single or twin axle.
Which is lighter, the Ifor Williams CT166 or the Ifor Williams GD85?
The Ifor Williams GD85. It is 490kg lighter empty than the Ifor Williams CT166.
Can I tow the Ifor Williams CT166 or the Ifor Williams GD85 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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