All car tires have a designation of their size.
Designation example 205/55R16 91 W:
- 205 - profile width (mm);
- 55 - the ratio of the height of the profile to the width of the tire (%);
- R - radial tires;
- 16 - diameter of the rim in inches;
- 91 - digital code for the maximum permitted tire load (in this case 615 kg);
- W - digital code for the maximum permitted speed (in this case 270 km/h).