Kia Optima: Tire Speed Ratings - Tires and Wheels - Maintenance - Kia Optima MS/Magentis 2000-2005 Owners ManualKia Optima: Tire Speed Ratings

The chart below shows many of the different speed ratings currently being used for passenger car tires. The speed rating symbol is part of the tire size designation on the sidewall of the tire. This symbol corresponds to that tire’s designed maximum safe operating speed.

Uniform Tire Quality Grading

Wheel Size Designation
Wheels are also marked with important information that you need if you ever have to replace one. The following explains what the letters and numbers in the wheel size designation mean. Example wh ...

Uniform Tire Quality Grading
The following information relates to the tire grading system developed by the National Highway Traffic Safety Administration (NHTSA) for grading tires by tread wear, traction and temperature perfo ...

See also:

Inspection
1. Turn ignition switch OFF. 2. Disconnect the oil temperature sensor connector. 3. Measure resistance between sensor signal terminal and sensor g ...

Withheld alarm
When the alarm is armed, the alarm will not sound if the trunk lid is opened with either the key or the transmitter. However, if the trunk lid is not opened completely within two seconds after unlo ...

ECM Problem Inspection Procedure
1. TEST ECM GROUND CIRCUIT: Measure resistance between ECM and chassis ground using the backside of ECM harness connector as ECM side check point. If the problem is found, repa ...

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