Head to head
Ifor Williams GH146 vs Ifor Williams HB511
The Ifor Williams GH146 is rated 800kg heavier gross and is 90kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams GH146 is rated 800kg heavier gross.
- Unladen weight: the Ifor Williams HB511 weighs 90kg more empty.
Specifications side by side
| Ifor Williams GH146 | Ifor Williams HB511 | |
|---|---|---|
| Gross weight | 3500kg | 2,700kg |
| Unladen weight | 910kg | 1,000kg |
| Payload | 2590kg | - |
| Internal bed | 4.285m x 1.84m | - |
| Internal length | - | 3.52m |
| Internal width | - | 1.79m |
| Brakes | - | Braked |
Sources: Ifor Williams GH146, Ifor Williams HB511. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GH146 if...
- you want one that is rated 800kg heavier gross
- you want one that is 90kg lighter empty
Aimed at plant hire operators who need the longest bed in the GH range for larger excavators or two smaller machines, with a tri-axle chassis to keep payload up within the 3500kg limit.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Buy or hire the HB511 if...
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 GH146 and the Ifor Williams HB511?
The Ifor Williams GH146 is rated 800kg heavier gross and is 90kg lighter empty. The Ifor Williams GH146 is a a tri-axle long-bed plant trailer; the Ifor Williams HB511 is a two-horse trailer, twin axle, wider body.
Which is lighter, the Ifor Williams GH146 or the Ifor Williams HB511?
The Ifor Williams GH146. It is 90kg lighter empty than the Ifor Williams HB511.
Can I tow the Ifor Williams GH146 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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