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Last reviewed: 6 July 2026
V55/5 form · Box 19
Technical Permissible Max Towable Mass
What goes in box 19
Box 19 of the DVLA V55/5 form is for technical permissible max towable mass. It collects 2 entries on the form: technical permissible max towable mass (a) braked (kg) and technical permissible max towable mass (b) unbraked (kg).
The maximum mass of a braked trailer the vehicle may tow. Take this from the Certificate of Conformity.
What to enter
| Field | Type | Required? |
|---|---|---|
Technical Permissible Max Towable Mass (a) Braked (kg) The maximum mass of a braked trailer the vehicle may tow. Take this from the Certificate of Conformity. | number | Optional |
Technical Permissible Max Towable Mass (b) Unbraked (kg) The maximum mass of an unbraked trailer the vehicle may tow. Take this from the Certificate of Conformity. | number | Optional |
Source
This page is generated from the same field definitions our V55/5 tool validates against, mapped to the official DVLA guidance.
V355/5 official guidance (GOV.UK)v55-5.com is an independent service and is not affiliated with the DVLA.
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