Head to head
Ifor Williams GP vs Ifor Williams HB506
The Ifor Williams GP is rated 900kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams GP is rated 900kg heavier gross.
Specifications side by side
| Ifor Williams GP | Ifor Williams HB506 | |
|---|---|---|
| Gross weight | 3500kg | 2,600kg |
| Axles | Tri-axle | - |
| Unladen weight | - | 920kg |
| Internal length | - | 3.16m |
| Internal width | - | 1.67m |
| Brakes | - | Braked |
Sources: Ifor Williams GP, Ifor Williams HB506. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GP if...
- you want one that is rated 900kg heavier gross
Ifor Williams GP, carried by UK dealers and hire companies listed on GetBrent for sale. Plant trailers are the working end of groundworks: contractors and hire firms use them to move mini diggers, dumpers and rollers between sites.
Listed by
- R M Trailer Centre - Middlesbrough, North Ormesby
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Buy or hire the HB506 if...
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
- R M Trailer Centre - Middlesbrough, North Ormesby
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Ifor Williams GP and the Ifor Williams HB506?
The Ifor Williams GP is rated 900kg heavier gross. The Ifor Williams GP is a plant trailer range; the Ifor Williams HB506 is a two-horse trailer, twin axle.
Can I tow the Ifor Williams GP or the Ifor Williams HB506 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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