Kia Optima: Specifications & Consumer information / Tire specification and pressure label

The tires supplied on your new vehicle are chosen to provide the best performance
for normal driving.
The tire label located on the driver's side center pillar gives the tire pressures
recommended for your vehicle.
The vehicle certification label attached on the driver’s side center pillar gives
the vehicle identification number (VIN). ...
■ Gasoline engine (THETA 2.4L GDI)
The engine number is stamped on the engine block as shown in the drawing.
...
Other information:
Schematic diagrams
Connector and Terminal function
Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad center panel.
(Refer to Body - "Crash Pad Center Panel")
...
Headrest
The rear seat is equipped with headrests in all the seating positions for the
occupant's safety and comfort.
The headrest not only provides comfort for passengers, but also helps protect
the head and neck in the event of a collision.
For maximum effectiveness in case of an accident ...