Head to head
Ifor Williams HB403 vs Ifor Williams P5
The Ifor Williams P5 is 626kg lighter empty. The Ifor Williams HB403 is rated 1.1 tonnes heavier gross and carries 474kg more.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HB403 weighs 626kg more empty.
- Gross weight: the Ifor Williams HB403 is rated 1.1 tonnes heavier gross.
- Payload: the Ifor Williams HB403 carries 474kg more.
Specifications side by side
| Ifor Williams HB403 | Ifor Williams P5 | |
|---|---|---|
| Gross weight | 1600kg | 500kg |
| Unladen weight | 767kg | 141kg |
| Payload | 833kg | 359kg |
| Internal length | 3.08m | - |
| Internal width | 1.30m | - |
| Internal bed | - | 1.53m x 1.02m |
| Brakes | - | Unbraked |
Sources: Ifor Williams HB403, Ifor Williams P5. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HB403 if...
- you want one that is rated 1.1 tonnes heavier gross
- you want one that carries 474kg more
The smallest trailer in the HB horsebox range, bought by owners of a single horse or a couple of ponies who want the lightest legal option that can still be towed by a mid-size car.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Buy or hire the P5 if...
- you want one that is 626kg lighter empty
A light general-purpose trailer for domestic buyers moving garden waste, small loads or a mower, chosen for its low unladen weight so it can be towed by almost any car.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Common questions
What is the difference between the Ifor Williams HB403 and the Ifor Williams P5?
The Ifor Williams P5 is 626kg lighter empty. The Ifor Williams HB403 is rated 1.1 tonnes heavier gross and carries 474kg more. The Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer; the Ifor Williams P5 is a the smallest unbraked domestic trailer Ifor Williams makes.
Which is lighter, the Ifor Williams HB403 or the Ifor Williams P5?
The Ifor Williams P5. It is 626kg lighter empty than the Ifor Williams HB403.
Which carries more, the Ifor Williams HB403 or the Ifor Williams P5?
The Ifor Williams HB403, by 474kg.
Can I tow the Ifor Williams HB403 or the Ifor Williams P5 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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