Head to head
Brian James A-Max 305 vs Ifor Williams TT3621
The Ifor Williams TT3621 is rated 900kg heavier gross and carries 475kg more.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams TT3621 is rated 900kg heavier gross.
- Payload: the Ifor Williams TT3621 carries 475kg more.
Specifications side by side
| Brian James A-Max 305 | Ifor Williams TT3621 | |
|---|---|---|
| Gross weight | 2600kg | 3500kg |
| Payload | 2035kg | 2510kg (195/60R12C) or 2500kg (185/70R13C) |
| Internal bed | 4.3m x 1.96m | - |
| Unladen weight | - | 990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres) |
| Internal length | - | 3.62m / 11'9" |
| Internal width | - | 1.95m / 6'5" |
Sources: Brian James A-Max 305, Ifor Williams TT3621. 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 TT3621 if...
- you want one that is rated 900kg heavier gross
- you want one that carries 475kg more
The largest Ifor Williams tipper. A 3.6m by 1.95m body is chosen for bulky, lighter loads - green waste, clearance and bark - where volume runs out before weight does, and it is a staple of plant and tool hire fleets. Formerly sold as the TT126.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Brian James A-Max 305 and the Ifor Williams TT3621?
The Ifor Williams TT3621 is rated 900kg heavier gross and carries 475kg more. The Brian James A-Max 305 is a a longer, higher-capacity version of the A-Max flatbed car trailer; the Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping.
Which carries more, the Brian James A-Max 305 or the Ifor Williams TT3621?
The Ifor Williams TT3621, by 475kg.
Can I tow the Brian James A-Max 305 or the Ifor Williams TT3621 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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