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Ifor Williams HBE506 vs Richardson Trailers Supreme Treble

The Ifor Williams HBE506 is 485kg lighter empty. The Richardson Trailers Supreme Treble is rated 700kg heavier gross.

Last reviewed 13 September 2026

Key differences

Specifications side by side

Ifor Williams HBE506Richardson Trailers Supreme Treble
Gross weight2000kg2,700kg
Unladen weight775kg1,260kg
Payload1225kg-
Internal length3.26m-
Internal width1.67m-
Capacity-2 horses forward, 1 pony reversed
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: Ifor Williams HBE506, Richardson Trailers Supreme Treble. Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the HBE506 if...

  • you want one that is 485kg lighter empty

Aimed at owners who want HB506-sized space for two horses or ponies but need a lower gross weight to stay within a smaller car's towing limit.

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Full HBE506 specifications →

Buy or hire the Supreme Treble if...

  • you want one that is rated 700kg 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

Full Supreme Treble specifications →

Common questions

What is the difference between the Ifor Williams HBE506 and the Richardson Trailers Supreme Treble?

The Ifor Williams HBE506 is 485kg lighter empty. The Richardson Trailers Supreme Treble is rated 700kg heavier gross. The Ifor Williams HBE506 is a a lighter-weight version of the HB506 double horsebox; the Richardson Trailers Supreme Treble is a trailer for two horses and a pony, one forward one reversed.

Which is lighter, the Ifor Williams HBE506 or the Richardson Trailers Supreme Treble?

The Ifor Williams HBE506. It is 485kg lighter empty than the Richardson Trailers Supreme Treble.

Can I tow the Ifor Williams HBE506 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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