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 ReplacementInstallation
1.
Remove the ignition key from
the vehicle.
2.
Disconnect the battery negative
cable and wait for at least three minutes.
3.
Tighten the curtain airb ...
Tire care
For proper maintenance, safety, and
maximum fuel economy, you must
always maintain recommended tire
inflation pressures and stay within
the load limits and weight distribution
recommended fo ...
Specifications
Fuel Delivery System
Items
Specification
Fuel Tank
Capacity
70 lit. (18.5 U.S.gal., 74.0 U.S.qt., 61.6 Imp.qt.)
...