Tyre size guide
Find the numbers on your current tyre, then check the approved specification in your vehicle documentation. Every part of the marking matters.
205/55 R16
In 205/55 R16, 205 is nominal width in millimetres; 55 is sidewall height as a percentage of width; R means radial construction; 16 is the rim diameter in inches. This is an example, not a recommendation for a particular vehicle.
The load index and speed symbol follow the size. Match the complete approved specification, not just these example numbers.
Dimensions alone do not confirm fitment. Check load and speed ratings, tyre construction and any manufacturer requirements.