All kind of codes and numbers you can find on your tires. This is very helpful when you look to replace your current tires. Please be aware that different manufacturers may add or omit some codes. The US DOT codes are mandatory and will show on each tire.
- P: Passenger Car
- LT: Light Truck
- ST: Special Trailer
- T: Temporary (restricted usage for “space-saver” spare wheels)
What Does it Mean?
| 205 | This is the Section Width. It is the width of the tire from sidewall to sidewall, in millimeters. This tire is 205 millimeters wide. |
| 60 | This is the Aspect Ratio, and is the ratio of the sidewall height to the Section Width. The sidewall height of this tire is 60% of the Section Width, or 123 mm. |
| R | The “R” indicates that this tire is a radial. |
| 16 | This is the Wheel Diameter that the tire fits, in inches. This tire will only fit a 16″ wheel. |
| 92 | This is the nomenclature used to indicate the Load Carrying Capacity of the the tire. |
| H | This is an alphanumeric indicator used to designate the maximum speed at which a properly installed and inflated tire may be driven. An H rated tire can be driven at speeds up to 130 mph. (See speed rating table below) |
| Code | mph | km/h | Code | mph | km/h | |
|---|---|---|---|---|---|---|
| A1 | 3 | 5 | L | 75 | 120 | |
| A2 | 6 | 10 | M | 81 | 130 | |
| A3 | 9 | 15 | N | 87 | 140 | |
| A4 | 12 | 20 | P | 94 | 150 | |
| A5 | 16 | 25 | Q | 100 | 160 | |
| A6 | 19 | 30 | R | 106 | 170 | |
| A7 | 22 | 35 | S | 112 | 180 | |
| A8 | 25 | 40 | T | 118 | 190 | |
| B | 31 | 50 | U | 124 | 200 | |
| C | 37 | 60 | H | 130 | 210 | |
| D | 40 | 65 | V | 149 | 240 | |
| E | 43 | 70 | Z | over 149 | over 240 | |
| F | 50 | 80 | W | 168 | 270 | |
| G | 56 | 90 | (W) | over 168 | over 270 | |
| J | 62 | 100 | Y | 186 | 300 | |
| K | 68 | 110 | (Y) | over 186 | over 300 |
US DOT
Look for the word DOT then after some coding there will be a 3 or 4 digit number, the first two are the week number of production while the last two numbers are the year of production. In this case the tire production was week 29 in the year 2010.
MORE MEASUREMENTS AND CODES
IMPORTANT FOR DUAL TIRES
