Head to head
Ifor Williams GD85 vs Ifor Williams HBX506
The Ifor Williams GD85 is 470kg lighter empty. The Ifor Williams HBX506 is rated 1.2 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HBX506 weighs 470kg more empty.
- Gross weight: the Ifor Williams HBX506 is rated 1.2 tonnes heavier gross.
Specifications side by side
| Ifor Williams GD85 | Ifor Williams HBX506 | |
|---|---|---|
| Gross weight | 1,400kg single axle / 2,700kg twin axle | 2600kg |
| Unladen weight | 395kg single axle / 485kg twin axle | 865kg |
| Internal bed | 2.5m x 1.58m (8ft 2in x 5ft 2in) | - |
| Brakes | Braked, auto-reverse over-run | - |
| Payload | - | 1735kg |
| Internal length | - | 3.26m |
| Internal width | - | 1.67m |
Sources: Ifor Williams GD85, Ifor Williams HBX506. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GD85 if...
- you want one that is 470kg 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 →Buy or hire the HBX506 if...
- you want one that is rated 1.2 tonnes heavier gross
A mid-size horsebox for owners moving one or two horses who want the updated HBX styling and features rather than the standard HB range trailer.
Listed by
- R M Trailer Centre - Middlesbrough, North Ormesby
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Ifor Williams GD85 and the Ifor Williams HBX506?
The Ifor Williams GD85 is 470kg lighter empty. The Ifor Williams HBX506 is rated 1.2 tonnes heavier gross. The Ifor Williams GD85 is a general duty box trailer, single or twin axle; the Ifor Williams HBX506 is a a double horsebox trailer from Ifor Williams' HBX range.
Which is lighter, the Ifor Williams GD85 or the Ifor Williams HBX506?
The Ifor Williams GD85. It is 470kg lighter empty than the Ifor Williams HBX506.
Can I tow the Ifor Williams GD85 or the Ifor Williams HBX506 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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