Head to head
Brian James A-Max 305 vs Ifor Williams HB506
The Brian James A-Max 305 is a a longer, higher-capacity version of the a-max flatbed car trailer. The Ifor Williams HB506 is a two-horse trailer, twin axle.
Last reviewed 13 September 2026
Specifications side by side
| Brian James A-Max 305 | Ifor Williams HB506 | |
|---|---|---|
| Gross weight | 2600kg | 2,600kg |
| Payload | 2035kg | - |
| Internal bed | 4.3m x 1.96m | - |
| Unladen weight | - | 920kg |
| Internal length | - | 3.16m |
| Internal width | - | 1.67m |
| Brakes | - | Braked |
Sources: Brian James A-Max 305, Ifor Williams HB506. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the A-Max 305 if...
Suits owners of larger saloons or estate cars who have outgrown the shorter A-Max 210 but do not need a full car-transporter range trailer. The extra bed length and payload give more margin for a heavier road car.
Listed by
- A47 Barwell Trailers Sales Hire Service Ltd - Leicester, Barwell
Buy or hire the HB506 if...
The mainstream two-horse trailer in Britain, used by private owners and small yards. Its comparatively low unladen weight for the class is the practical point: it widens the range of 4x4s and large SUVs that can legally and comfortably tow it.
Listed by
- R M Trailer Centre - Middlesbrough, North Ormesby
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Brian James A-Max 305 and the Ifor Williams HB506?
The Brian James A-Max 305 is a a longer, higher-capacity version of the A-Max flatbed car trailer; the Ifor Williams HB506 is a two-horse trailer, twin axle.
Can I tow the Brian James A-Max 305 or the Ifor Williams HB506 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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