Head to head
Erde PM320 vs Humbaur Steely
The Humbaur Steely carries 394kg more and is rated 450kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Payload: the Humbaur Steely carries 394kg more.
- Gross weight: the Humbaur Steely is rated 450kg heavier gross.
Specifications side by side
| Erde PM320 | Humbaur Steely | |
|---|---|---|
| Gross weight | 300kg | 750kg |
| Payload | 236kg | 630kg |
| Unladen weight | 60kg | - |
| Internal bed | 200 x 112cm | - |
| Inner length | - | 2050mm |
| Inner width | - | 1095mm |
Sources: Erde PM320, Humbaur Steely. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the PM320 if...
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 Steely if...
- you want one that carries 394kg more
- you want one that is rated 450kg heavier gross
The Steely is Humbaur's budget single-axle trailer, built with a hot-dip galvanised chassis as what the manufacturer describes as an entry point into trailer ownership. It suits light garden, construction-site and hobby loads rather than heavier trade use.
Full Steely specifications →Common questions
What is the difference between the Erde PM320 and the Humbaur Steely?
The Humbaur Steely carries 394kg more and is rated 450kg heavier gross. The Erde PM320 is a a small unbraked single-axle trailer for carrying one motorcycle.; the Humbaur Steely is a a small, unbraked single-axle flatbed trailer aimed at first-time buyers and light garden/site use..
Which carries more, the Erde PM320 or the Humbaur Steely?
The Humbaur Steely, by 394kg.
Can I tow the Erde PM320 or the Humbaur Steely 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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