Head to head
Ifor Williams HB510XL vs PRG Trailers ProLine Beavertail
The Ifor Williams HB510XL is rated 500kg heavier gross and carries 235kg more.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams HB510XL is rated 500kg heavier gross.
- Payload: the Ifor Williams HB510XL carries 235kg more.
Specifications side by side
| Ifor Williams HB510XL | PRG Trailers ProLine Beavertail | |
|---|---|---|
| Gross weight | 3500kg | 3,000kg (twin axle, 10in wheels) up to 3,500kg (twin axle 13in wheels, and all tri axle models) |
| Payload | 2210kg | 1,975kg to 2,550kg depending on configuration |
| Unladen weight | 1290kg | - |
| Internal length | 4.25m | - |
| Internal width | 1.74m | - |
| Internal bed | - | 4.88m to 6.40m long, 2.13m or 2.28m wide |
| Axles | - | Twin or Tri |
| Brakes | - | Braked (Alko AAA self-adjusting brakes) |
Sources: Ifor Williams HB510XL, PRG Trailers ProLine Beavertail. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HB510XL if...
- you want one that is rated 500kg heavier gross
- you want one that carries 235kg 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
Buy or hire the ProLine Beavertail if...
The ProLine Beavertail suits owners of low-ground-clearance cars, since its beavertail ramp lets a car drive on and off without grounding, unlike a flat-bed transporter. PRG offers it across twin and tri-axle chassis so buyers can match the trailer to a 3000kg or 3500kg tow limit.
Listed by
- Compass Trailers - Lewes, Ringmer
Common questions
What is the difference between the Ifor Williams HB510XL and the PRG Trailers ProLine Beavertail?
The Ifor Williams HB510XL is rated 500kg heavier gross and carries 235kg more. The Ifor Williams HB510XL is a an extra-length double horsebox trailer; the PRG Trailers ProLine Beavertail is a pRG Trailers' open beavertail car trailer range, built with a hinged tail ramp for loading low cars..
Which carries more, the Ifor Williams HB510XL or the PRG Trailers ProLine Beavertail?
The Ifor Williams HB510XL, by 235kg.
Can I tow the Ifor Williams HB510XL or the PRG Trailers ProLine Beavertail 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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