Head to head
Ifor Williams GD84 vs Ifor Williams HB511
The Ifor Williams GD84 is 550kg lighter empty. The Ifor Williams HB511 is 54cm (2ft) wider inside and is 97cm (3ft) longer inside.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HB511 weighs 550kg more empty.
- Internal width: the Ifor Williams HB511 is 54cm (2ft) wider inside.
- Internal length: the Ifor Williams HB511 is 97cm (3ft) longer inside.
Specifications side by side
| Ifor Williams GD84 | Ifor Williams HB511 | |
|---|---|---|
| Gross weight | 2700kg | 2,700kg |
| Unladen weight | 450kg | 1,000kg |
| Internal length | 2.55m | 3.52m |
| Internal width | 1.25m | 1.79m |
| Payload | 2250kg | - |
| Axles | Twin | - |
| Brakes | - | Braked |
Sources: Ifor Williams GD84, Ifor Williams HB511. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GD84 if...
- you want one that is 550kg lighter empty
A everyday farm and smallholding trailer for moving loose loads, logs or small livestock behind a 4x4 or pickup, chosen over the single-axle GD84 when the extra payload of a twin-axle chassis is needed.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Buy or hire the HB511 if...
- you want one that is 54cm (2ft) wider inside
- you want one that is 97cm (3ft) longer inside
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 Lincolnshire - Doncaster, Belton
- 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
Common questions
What is the difference between the Ifor Williams GD84 and the Ifor Williams HB511?
The Ifor Williams GD84 is 550kg lighter empty. The Ifor Williams HB511 is 54cm (2ft) wider inside and is 97cm (3ft) longer inside. The Ifor Williams GD84 is a a general-purpose dropside trailer; the Ifor Williams HB511 is a two-horse trailer, twin axle, wider body.
Which is lighter, the Ifor Williams GD84 or the Ifor Williams HB511?
The Ifor Williams GD84. It is 550kg lighter empty than the Ifor Williams HB511.
Can I tow the Ifor Williams GD84 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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