Kia Optima: Tire rotationTo equalize tread wear, it is recommended that the tires be rotated every 12,000 km (7,500 miles) or sooner if irregular wear develops.
During rotation, check the tires for correct balance.
When rotating tires, check for uneven wear and damage. Abnormal wear is usually caused by incorrect tire pressure, improper wheel alignment, outof- balance wheels, severe braking or severe cornering. Look for bumps or bulges in the tread or side of tire. Replace the tire if you find either of these conditions. Replace the tire if fabric or cord is visible. After rotation, be sure to bring the front and rear tire pressures to specification and check lug nut tightness.
Refer to “Tire and wheels” in section 8.

Without a spare tire

Directional tires (if equipped)
Disc brake pads should be inspected for wear whenever tires are rotated.
✽ NOTICE
Rotate radial tires that have an asymmetric tread pattern only from front to rear and not from right to left.
WARNING
Checking tire inflation pressure
Wheel alignment and tire balanceRheostat. Repair procedures
Inspection
1.
Disconnect the negative (-) battery
terminal.
2.
Remove the crash pad lower panel.
(Refer to the BD group - "Crash pad")
3.
...
Turn signals and lane change signals
The ignition switch must be on for the turn signals to function. To turn on the
turn signals, move the lever up or down (A). The green arrow indicators on the instrument
panel indicate which tur ...
Removal
•
DON’T remove the camshaft position sensor
while the engine is running or right after engine is turned
...