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 ReplacementIdentification Number Description. Vehicle Identification Number
1.
World Manufacturer Identifier
(WMI)- KNA (Korea) : Passenger vehicle, MPV(Multipurpose
Passenger Vehicle)/SUV(Sports Utility Vehicle)/RV(Recreational Vehicle)
- 5XX (U. ...
Removal and Installation
1.
Disconnect the terminals from the battery.
Tightening torque
:(+) terminal (A) : 7.8 ~ 9.8N.m (0.8 ~ 1.0kgf.m,
5.8 ~ 7.2lb-ft)
(-) terminal (B) : 4.0 ...
To Defrost Outside Windshield
1. Set temperature to the extreme hot (25°C~32°C) position.
2. Set the fan speed to the or
position.
3. Press the defrost button ().
4. The air conditioning will be turned on according to th ...