How to Read a Tire Size
|
 |
|
The sidewall of a tire makes good reading - if you know how to interpret the information
you'll find there. Take a look at these basic definitions. |
| 1. |
205 |
Width of the tire in millimeters. |
| 2. |
55 |
Aspect ratio - This sidewall's height is
roughly 55% of the tire's width. |
| 3. |
R |
For radial construction |
| 4. |
16 |
Nominal rim diameter
code of the wheel on
which the tire fits. |
| 5. |
88 |
Load
index is a numerical code associated with
the maximum load a tire can carry under certain service conditions. |
| 6. |
V |
Speed
symbol - This tire can carry a specified
load under specified service conditions at speeds up to 149 mph. |
| 7. |
88V |
Service description, a combination of the Load
Index and Speed Symbol.
 Service
Description
The service description contains a two-digit number (load index) and a
letter (speed rating).
In this example (left) the service description has a load index of
82 and a speed rating of H. |
