Tyre codeSlovenia
160. Tyre code
A tyre code is the series of letters and numbers marked on a tyre's sidewall that identifies important characteristics such as tyre width, aspect ratio, construction, wheel diameter, load capacity and speed rating. A typical example is 205/55 R16 91V.
Drivers should use tyres whose specifications are suitable for the vehicle. The required tyre sizes and ratings can normally be found in the vehicle handbook, certificate of conformity or other manufacturer information.
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What does a tyre code such as 205/55 R16 mean?
205 indicates the nominal tyre width in millimetres, 55 is the aspect ratio between sidewall height and tyre width, R indicates radial construction and 16 indicates the diameter of the wheel rim in inches.
🔗 michelin.co.uk • Michelin, tyre sidewall markings and sizing
🔗 michelin.co.uk • Michelin, winter tyres, conditions and markings
🔗 gov.uk • Great Britain Highway Code, Annex 6, tyres and pressures; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 228–231, snow and ice; national guidance example
What other markings can appear on a tyre?
Tyres can carry additional markings indicating approval, manufacturer information, production date, suitability for winter conditions, reinforced construction or other technical characteristics. The exact markings depend on the tyre type and applicable standards.
🔗 michelin.co.uk • Michelin, tyre sidewall markings and sizing
🔗 michelin.co.uk • Michelin, winter tyres, conditions and markings
🔗 gov.uk • Great Britain Highway Code, Annex 6, tyres and pressures; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 228–231, snow and ice; national guidance example

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