Head to head
Erde PM320 vs Ifor Williams HB510XL
The Erde PM320 is 1,230kg lighter empty. The Ifor Williams HB510XL is rated 3.2 tonnes heavier gross and carries 1,974kg more.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HB510XL weighs 1,230kg more empty.
- Gross weight: the Ifor Williams HB510XL is rated 3.2 tonnes heavier gross.
- Payload: the Ifor Williams HB510XL carries 1,974kg more.
Specifications side by side
| Erde PM320 | Ifor Williams HB510XL | |
|---|---|---|
| Gross weight | 300kg | 3500kg |
| Unladen weight | 60kg | 1290kg |
| Payload | 236kg | 2210kg |
| Internal bed | 200 x 112cm | - |
| Internal length | - | 4.25m |
| Internal width | - | 1.74m |
Sources: Erde PM320, Ifor Williams HB510XL. 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 1,230kg 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 HB510XL if...
- you want one that is rated 3.2 tonnes heavier gross
- you want one that carries 1,974kg more
For owners of taller or longer horses who find the standard HB511 too tight, giving extra internal length on the same 3500kg chassis so it stays towable by a suitably rated 4x4.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Common questions
What is the difference between the Erde PM320 and the Ifor Williams HB510XL?
The Erde PM320 is 1,230kg lighter empty. The Ifor Williams HB510XL is rated 3.2 tonnes heavier gross and carries 1,974kg more. The Erde PM320 is a a small unbraked single-axle trailer for carrying one motorcycle.; the Ifor Williams HB510XL is a an extra-length double horsebox trailer.
Which is lighter, the Erde PM320 or the Ifor Williams HB510XL?
The Erde PM320. It is 1,230kg lighter empty than the Ifor Williams HB510XL.
Which carries more, the Erde PM320 or the Ifor Williams HB510XL?
The Ifor Williams HB510XL, by 1,974kg.
Can I tow the Erde PM320 or the Ifor Williams HB510XL 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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