Head to head
Erde PM320 vs Ifor Williams HB511
The Erde PM320 is 940kg lighter empty. The Ifor Williams HB511 is rated 2.4 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HB511 weighs 940kg more empty.
- Gross weight: the Ifor Williams HB511 is rated 2.4 tonnes heavier gross.
Specifications side by side
| Erde PM320 | Ifor Williams HB511 | |
|---|---|---|
| Gross weight | 300kg | 2,700kg |
| Unladen weight | 60kg | 1,000kg |
| Payload | 236kg | - |
| Internal bed | 200 x 112cm | - |
| Internal length | - | 3.52m |
| Internal width | - | 1.79m |
| Brakes | - | Braked |
Sources: Erde PM320, Ifor Williams HB511. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the PM320 if...
- you want one that is 940kg lighter empty
Near-identical to the PM310, rated for slightly heavier motorcycles up to 236kg. The two are the same trailer to look at, so the number to check before buying is the wet weight of the bike you intend to carry.
Listed by
- 1Stop Trailers Ltd - Sudbury, Little Waldingfield
- Trailer Centre - Rowley Regis
Buy or hire the HB511 if...
- you want one that is rated 2.4 tonnes heavier gross
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 Erde PM320 and the Ifor Williams HB511?
The Erde PM320 is 940kg lighter empty. The Ifor Williams HB511 is rated 2.4 tonnes heavier gross. The Erde PM320 is a a small unbraked single-axle trailer for carrying one motorcycle.; the Ifor Williams HB511 is a two-horse trailer, twin axle, wider body.
Which is lighter, the Erde PM320 or the Ifor Williams HB511?
The Erde PM320. It is 940kg lighter empty than the Ifor Williams HB511.
Can I tow the Erde PM320 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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