Head to head
Erde PM320 vs Ifor Williams HB506
The Erde PM320 is 860kg lighter empty. The Ifor Williams HB506 is rated 2.3 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HB506 weighs 860kg more empty.
- Gross weight: the Ifor Williams HB506 is rated 2.3 tonnes heavier gross.
Specifications side by side
| Erde PM320 | Ifor Williams HB506 | |
|---|---|---|
| Gross weight | 300kg | 2,600kg |
| Unladen weight | 60kg | 920kg |
| Payload | 236kg | - |
| Internal bed | 200 x 112cm | - |
| Internal length | - | 3.16m |
| Internal width | - | 1.67m |
| Brakes | - | Braked |
Sources: Erde PM320, Ifor Williams HB506. 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 860kg 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 HB506 if...
- you want one that is rated 2.3 tonnes heavier gross
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 Erde PM320 and the Ifor Williams HB506?
The Erde PM320 is 860kg lighter empty. The Ifor Williams HB506 is rated 2.3 tonnes heavier gross. The Erde PM320 is a a small unbraked single-axle trailer for carrying one motorcycle.; the Ifor Williams HB506 is a two-horse trailer, twin axle.
Which is lighter, the Erde PM320 or the Ifor Williams HB506?
The Erde PM320. It is 860kg lighter empty than the Ifor Williams HB506.
Can I tow the Erde PM320 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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