Head to head
Bockmann AH 4320/30 vs Ifor Williams HB511
The Bockmann AH 4320/30 is rated 300kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Bockmann AH 4320/30 is rated 300kg heavier gross.
Specifications side by side
| Bockmann AH 4320/30 | Ifor Williams HB511 | |
|---|---|---|
| Gross weight | 3,000kg | 2,700kg |
| Payload | 2,123kg | - |
| Interior length | 4,300mm | - |
| Interior width | 2,080mm | - |
| Loading angle | 10 degrees (hydraulic tilt bed) | - |
| Unladen weight | - | 1,000kg |
| Internal length | - | 3.52m |
| Internal width | - | 1.79m |
| Brakes | - | Braked |
Sources: Bockmann AH 4320/30, Ifor Williams HB511. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the AH 4320/30 if...
- you want one that is rated 300kg heavier gross
A low-angle hydraulic tilt-bed car transporter for loading standard cars without ramps. It suits vehicle traders, recovery firms and enthusiasts moving one car at a time behind a family-sized tow car.
Listed by
- Manningtree Hire & Self Storage - Manningtree, Lawford
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 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
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Bockmann AH 4320/30 and the Ifor Williams HB511?
The Bockmann AH 4320/30 is rated 300kg heavier gross. The Bockmann AH 4320/30 is a twin-axle car transporter trailer; the Ifor Williams HB511 is a two-horse trailer, twin axle, wider body.
Can I tow the Bockmann AH 4320/30 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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