Kia Optima: Tire ReplacementIf the tire is worn evenly, a tread wear indicator will appear as a solid band 1/2 inch wide (12.7 mm) across the the tread. This shows there is less than 1/16 inch (1.6 mm) of tread left on the tire. Replace the tire when this happens.
Do not wait for the band to appear across the entire tread before replacing the tire.

Tire Rotation
Compact Spare Tire ReplacementEngine Cooling System
The high-pressure cooling system has a reservoir filled with year-round antifreeze
coolant. The reservoir is filled at the factory.
Check the antifreeze protection and coolant level at least once a ...
Electric type
The electric day/night rearview mirror automatically controls the glare from
the headlights of the car behind you. Adjust the rearview mirror to the desired
position.
Type A
Press the “O” ...
Components and Components Location
Components
1. HECU module
2. Front wheel speed sensor
3. Rear wheel speed sensor
4. Yaw rate & Lateral G sensor
5. Steering angle sensor
6. ABS Warning lamp
...