Head to head
Ifor Williams CT166 vs Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)
The Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) is 70kg lighter empty and carries 70kg more.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams CT166 weighs 70kg more empty.
- Payload: the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) carries 70kg more.
Specifications side by side
| Ifor Williams CT166 | Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 885kg | 815kg |
| Payload | 2615kg | 2685kg |
| Internal bed | 4.87m x 1.90m | - |
| Internal size | - | 3.65 x 1.83 |
| Bed height | - | 430mm |
Sources: Ifor Williams CT166, Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED). Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the CT166 if...
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 Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) if...
- you want one that is 70kg lighter empty
- you want one that carries 70kg more
The larger Challenger 50 beavertail for bigger mini excavators and compact plant. Used by groundworks firms and hire fleets that need extra bed length.
Full Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) specifications →Common questions
What is the difference between the Ifor Williams CT166 and the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)?
The Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) is 70kg lighter empty and carries 70kg more. The Ifor Williams CT166 is a a tilt-bed car and machinery transporter trailer; the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) is a 12 ft x 6 ft 3.5 tonne beavertail plant trailer.
Which is lighter, the Ifor Williams CT166 or the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)?
The Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED). It is 70kg lighter empty than the Ifor Williams CT166.
Which carries more, the Ifor Williams CT166 or the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)?
The Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED), by 70kg.
Can I tow the Ifor Williams CT166 or the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) 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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