Head to head
Ifor Williams HB506 vs Ifor Williams HB511
The Ifor Williams HB511 is 36cm (1ft) longer inside and is 12cm wider inside. The Ifor Williams HB506 is 80kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Internal length: the Ifor Williams HB511 is 36cm (1ft) longer inside.
- Unladen weight: the Ifor Williams HB511 weighs 80kg more empty.
- Internal width: the Ifor Williams HB511 is 12cm wider inside.
- Gross weight: the Ifor Williams HB511 is rated 100kg heavier gross.
Specifications side by side
| Ifor Williams HB506 | Ifor Williams HB511 | |
|---|---|---|
| Gross weight | 2,600kg | 2,700kg |
| Unladen weight | 920kg | 1,000kg |
| Internal length | 3.16m | 3.52m |
| Internal width | 1.67m | 1.79m |
| Brakes | Braked | Braked |
Sources: Ifor Williams HB506, Ifor Williams HB511. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HB506 if...
- you want one that is 80kg lighter empty
The mainstream two-horse trailer in Britain, used by private owners and small yards. Its comparatively low unladen weight for the class is the practical point: it widens the range of 4x4s and large SUVs that can legally and comfortably tow it.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
- Horse Trailer Sales - Robertsbridge, Staplecross
- R M Trailer Centre - Middlesbrough, North Ormesby
Buy or hire the HB511 if...
- you want one that is 36cm (1ft) longer inside
- you want one that is 12cm wider inside
- you want one that is rated 100kg heavier gross
The wider step up from the HB506, for larger horses or owners who want more room in transit. The extra 12cm of internal width and 36cm of length cost 80kg unladen, which is worth checking against your tow vehicle before choosing it over the HB506.
Listed by
- Trek-Trailers Suffolk - Bury Saint Edmunds
- R M Trailer Centre - Middlesbrough, North Ormesby
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- Horse Trailer Sales - Robertsbridge, Staplecross
- Trek-Trailers Three Counties - Hereford
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Ifor Williams HB506 and the Ifor Williams HB511?
The Ifor Williams HB511 is 36cm (1ft) longer inside and is 12cm wider inside. The Ifor Williams HB506 is 80kg lighter empty. The Ifor Williams HB506 is a two-horse trailer, twin axle; the Ifor Williams HB511 is a two-horse trailer, twin axle, wider body.
Which is lighter, the Ifor Williams HB506 or the Ifor Williams HB511?
The Ifor Williams HB506. It is 80kg lighter empty than the Ifor Williams HB511.
Can I tow the Ifor Williams HB506 or the Ifor Williams HB511 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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