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The tires are described by an alphanumeric code, molded on the sidewalls of the corresponding tire. These codes specify their dimensions and some of their key limitations, such as their load capacity or maximum speed.
The first number 185 is the width of the tire expressed in millimeters.
The second number 60, is the percentage of the height with respect to the width of the tire.
It is often called the Tire Series.
If this number is omitted it is considered to be equal to 80.
The third number 14, is the diameter of the tire in inches.
The rim is the metal ring on which the tire is mounted.
The letter R indicates that a tire is of radial structure.
Then the load index 82 and the speed index T indicate the maximum load and speed for which the tire was designed. See Speed Index Table - Table of load indexes.