Kia Optima: Tire Speed Ratings

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:

Check Engine (Malfunction Indicator) Light
This indicator light is part of the On Board Diagnostic System which monitors various emission control system components. If this light illuminates while driving, it indicates that a potential p ...

Armed stage
Park the vehicle and stop the engine. Arm the system as described below. 1. Remove the ignition key from the ignition switch and exit the vehicle. 2. Make sure that all doors (and tailgate) and engi ...

Starting the engine
WARNING Always wear appropriate shoes when operating your vehicle. Unsuitable shoes (high heels, ski boots,etc.) may interfere with your ability to use the brake, accelerator pedal, and clutch ( ...