Head to head
Humbaur Steely vs Richardson Trailers Supreme Treble
The Richardson Trailers Supreme Treble is rated 1,950kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Richardson Trailers Supreme Treble is rated 1,950kg heavier gross.
Specifications side by side
| Humbaur Steely | Richardson Trailers Supreme Treble | |
|---|---|---|
| Gross weight | 750kg | 2,700kg |
| Payload | 630kg | - |
| Inner length | 2050mm | - |
| Inner width | 1095mm | - |
| Capacity | - | 2 horses forward, 1 pony reversed |
| Unladen weight | - | 1,260kg |
| External dimensions | - | 5.40m long x 2.29m wide x 2.75m high |
| Internal dimensions | - | 3.54m long x 1.80m wide x 2.33m high |
Sources: Humbaur Steely, Richardson Trailers Supreme Treble. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Steely if...
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 →Buy or hire the Supreme Treble if...
- you want one that is rated 1,950kg heavier gross
A three-berth Richardson trailer built for a household with two horses and a pony rather than a full string. The reversed pony bay keeps overall length down compared with three forward-facing berths, which suits smaller yards and tow vehicles.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Common questions
What is the difference between the Humbaur Steely and the Richardson Trailers Supreme Treble?
The Richardson Trailers Supreme Treble is rated 1,950kg heavier gross. The Humbaur Steely is a a small, unbraked single-axle flatbed trailer aimed at first-time buyers and light garden/site use.; the Richardson Trailers Supreme Treble is a trailer for two horses and a pony, one forward one reversed.
Can I tow the Humbaur Steely or the Richardson Trailers Supreme Treble 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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