Head to head
Humbaur HTK vs Ifor Williams HB511
The Humbaur HTK is rated 800kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Humbaur HTK is rated 800kg heavier gross.
Specifications side by side
| Humbaur HTK | Ifor Williams HB511 | |
|---|---|---|
| Gross weight | 3500kg | 2,700kg |
| Brakes | Braked | Braked |
| Payload | 2550kg | - |
| Internal bed | 3.14m x 1.75m | - |
| Axles | Twin | - |
| Unladen weight | - | 1,000kg |
| Internal length | - | 3.52m |
| Internal width | - | 1.79m |
Sources: Humbaur HTK, Ifor Williams HB511. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HTK if...
- you want one that is rated 800kg heavier gross
A heavy-duty three-way tipper for builders' merchants and groundworkers who need to tip to either side as well as the rear. The wide model line (2000kg to 3500kg gross) lets buyers pick a size without moving to a different range.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Suffolk - Bury Saint Edmunds
- Trek-Trailers Three Counties - Hereford
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 Humbaur HTK and the Ifor Williams HB511?
The Humbaur HTK is rated 800kg heavier gross. The Humbaur HTK is a a tandem-axle three-way tipping trailer for construction and agricultural use; the Ifor Williams HB511 is a two-horse trailer, twin axle, wider body.
Can I tow the Humbaur HTK 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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