Head to head
Bockmann Grand Master SR vs Ifor Williams TT3621
The Ifor Williams TT3621 carries 1,048kg more and is rated 800kg heavier gross. The Bockmann Grand Master SR is 28cm longer inside.
Last reviewed 13 September 2026
Key differences
- Payload: the Ifor Williams TT3621 carries 1,048kg more.
- Gross weight: the Ifor Williams TT3621 is rated 800kg heavier gross.
- Internal width: the Ifor Williams TT3621 is 20cm wider inside.
- Internal length: the Bockmann Grand Master SR is 28cm longer inside.
Specifications side by side
| Bockmann Grand Master SR | Ifor Williams TT3621 | |
|---|---|---|
| Gross weight | 2700kg | 3500kg |
| Payload | 1462kg | 2510kg (195/60R12C) or 2500kg (185/70R13C) |
| Internal length | 3900mm | 3.62m / 11'9" |
| Internal width | 1750mm | 1.95m / 6'5" |
| Internal height | 2300mm | - |
| Unladen weight | - | 990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres) |
Sources: Bockmann Grand Master SR, Ifor Williams TT3621. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Grand Master SR if...
- you want one that is 28cm longer inside
The top trim of the Master line, with a walk-in tack room and centre-post partition for owners who want more storage and easier loading than the basic Master. Suits liveries and competition riders travelling one or two larger horses.
Listed by
- Böckmann UK Trailers & Horseboxes - Cinderford, Littledean
Buy or hire the TT3621 if...
- you want one that carries 1,048kg more
- you want one that is rated 800kg heavier gross
- you want one that is 20cm wider inside
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 Bockmann Grand Master SR and the Ifor Williams TT3621?
The Ifor Williams TT3621 carries 1,048kg more and is rated 800kg heavier gross. The Bockmann Grand Master SR is 28cm longer inside. The Bockmann Grand Master SR is a larger polyester 2-horse trailer with walk-in tack room; the Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping.
Which carries more, the Bockmann Grand Master SR or the Ifor Williams TT3621?
The Ifor Williams TT3621, by 1,048kg.
Can I tow the Bockmann Grand Master SR 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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