Head to head
Bockmann KK 3018/27 vs Ifor Williams TT3621
The Ifor Williams TT3621 carries 624kg more and is rated 800kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Payload: the Ifor Williams TT3621 carries 624kg more.
- Gross weight: the Ifor Williams TT3621 is rated 800kg heavier gross.
- Internal length: the Ifor Williams TT3621 is 65cm (2ft) longer inside.
- Internal width: the Ifor Williams TT3621 is 13cm wider inside.
Specifications side by side
| Bockmann KK 3018/27 | Ifor Williams TT3621 | |
|---|---|---|
| Gross weight | 2700kg | 3500kg |
| Payload | 1886kg | 2510kg (195/60R12C) or 2500kg (185/70R13C) |
| Internal length | 2970mm | 3.62m / 11'9" |
| Internal width | 1820mm | 1.95m / 6'5" |
| Axles | 2 | - |
| Brakes | Braked (overrun) | - |
| Unladen weight | - | 990kg (195/60R12C tyres) or 1000kg (185/70R13C tyres) |
Sources: Bockmann KK 3018/27, Ifor Williams TT3621. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the KK 3018/27 if...
An insulated, temperature-controlled box trailer for moving chilled or frozen goods, used by caterers, market traders and small food businesses. Its own cooling unit lets it hold a set temperature independent of the tow vehicle.
Full KK 3018/27 specifications →Buy or hire the TT3621 if...
- you want one that carries 624kg more
- you want one that is rated 800kg heavier gross
- you want one that is 65cm (2ft) longer inside
- you want one that is 13cm 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.
Full TT3621 specifications →Common questions
What is the difference between the Bockmann KK 3018/27 and the Ifor Williams TT3621?
The Ifor Williams TT3621 carries 624kg more and is rated 800kg heavier gross. The Bockmann KK 3018/27 is a refrigerated box trailer; the Ifor Williams TT3621 is a twin axle tipping trailer, 12ft body, electric tipping.
Which carries more, the Bockmann KK 3018/27 or the Ifor Williams TT3621?
The Ifor Williams TT3621, by 624kg.
Can I tow the Bockmann KK 3018/27 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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