For 1990-2009 cars only
The factory-installed tires and wheels operate satisfactorily with loads up to and including the full vehicle load capacity when inflated to the recommended inflation pressures. The following are important influences on the tire life:
| • | Correct tire pressures. |
| • | Proper vehicle maintenance. |
| • | Driving technique. |
The following increases the tire wear:
| • | Heavy cornering. |
| • | Wheel spin from rapid acceleration. |
| • | Unnecessarily sharp braking. |
Most passenger tires today have a service description branded on the sidewall after the tire size.
A sample tire size and service description is 225/55R16 94H M+S.
Designation | Definition |
|---|---|
225 | Section Width in Millimeter |
55 | Aspect Ratio |
R | Radial Construction |
16 | Rim Diameter in Inches |
94 | Load Index (1477 lbs) |
H | Speed Symbol - 210 km/h (130 mph) |
M+S | Mud and Snow |
The service description consists of the following two parts:
| • | The LOAD INDEX. |
| - | The load index defines the tire's load capacity at a maximum inflation. |
| - | The load index symbol designations range from 74 to 150. A higher numerical index designates a greater load carrying capacity. |
| • | The SPEED SYMBOL. |
| - | The speed symbol defines the speed capacity of the tire. |
| - | The speed symbol designations range from A1 to Z. The higher the alphabetical symbol the greater the speed capability of the tire. |
