Example of tire designation
195 - tire width in mm.
170 - height to width ratio (the height of the tire profile is 70% of the width).
If there is no indication of the height to width ratio (for example, 155 R 13), then we are talking about the "normal" ratio of height to width. For radial tires it is 82.
R - radial tire construction.
14 - disk diameter in inches.
89 - tire load index.
Please note: If there is an M+S designation between the numbers 14 and 89, then these are winter tires.
N - index of permissible maximum speed H: up to 210 km/h
The speed index stands behind the tire size designation. These indexes apply to both summer and winter tires.
Tyre speed ratings
| Speed index | Maximum permissible speed |
| Q | 160 km/h |
| S | 180 km/h |
| T | 190 km/h |
| n | 210 km/h |
| V | 240 km/h |
| W | 270 km/h |
If the tire designation is followed by the word "reinforced", then this tire has a reinforced design.
Date of tire manufacture
The tire's manufacturing date is indicated on it in the form of a code.
Example: DOT CUL2 UM8 257 ◁ TUBELESS
DOT - Department of Transportation (ministry of Transport).
CU - abbreviated designation of the tire manufacturer. L2 - tire size.
UM8 - tire construction.
257 - date of manufacture (Week 25, 1997.).
◁ - symbol of the decade from 1990 to 1999.
Tubeless - tubeless (Tubetype - with camera)
Example of disk designation: 5 Jx13
5 - rim width in inches.
J - letter designation of the height and contour of the disc edge (B - low rim shape).
X - designation of a one-piece deep rim.
13 - disk diameter in inches.