2011 KIA Optima wheel torque

Features of your vehicle
36
4
Electric power steering
Power steering uses the motor to assist
you in steering the vehicle. If the engine
is off or if the power steering system
becomes inoperative, the vehicle may
still be steered, but it will require
increased steering effort.
The motor driven power steering is con-
trolled by the power steering control unit
which senses the steering wheel torque
and vehicle speed to command the
motor.
The steering wheel becomes heavier as
the vehicle’s speed increases and
becomes lighter as the vehicle’s speed
decreases for better control of the steer-
ing wheel.
Should you notice any change in the
effort required to steer during normal
vehicle operation, have the power steer-
ing checked by an authorized KIA dealer.
✽ ✽
NOTICE
The following symptoms may occur dur-
ing normal vehicle operation:
• The EPS warning light does not illumi-
nate.
• The steering effort is high immediately after turning the ignition switch on.
This happens as the system performs
the EPS system diagnostics. When the
diagnostics is completed, the steering
wheel will return to its normal condi-
tion.
• A click noise may be heard from the EPS relay after the ignition switch is
turned to the ON or LOCK position.
• Motor noise may be heard when the vehicle is at a stop or at a low driving
speed.
• If the Electric Power Steering System does not operate normally, the warn-
ing light will illuminate on the instru-
ment cluster. The steering wheel may
become difficult to control or operate
abnormally. Take your vehicle to an
authorized Kia dealer and have the
vehicle checked as soon as possible.
• The steering effort increases if the steering wheel is rotated continuously
when the vehicle is not in motion.
However, after a few minutes, it will
return to its normal conditions. • When you operate the steering wheel
in low temperature, abnormal noise
could occur. If temperature rises, the
noise will disappear. This is a normal
condition.
STEERING WHEEL

611
What to do in an emergency
10. To install the wheel, hold it on thestuds, put the wheel nuts on the
studs and tighten them finger
tight. Jiggle the tire to be sure it is
completely seated, then tighten
the nuts as much as possible
with your fingers again.
11. Lower the vehicle to the ground by turning the wheel nut wrench
counterclockwise.
Then position the wrench as shown in
the drawing and tighten the wheel nuts.
Be sure the socket is seated complete-
ly over the nut. Do not stand on the
wrench handle or use an extension
pipe over the wrench handle.
Go around the wheel tightening every
nut following the numerical sequence
shown in the image until they are tight.
Then double-check each nut for tight-
ness. After changing the wheels, have
an authorized KIA dealer tighten the
wheel nuts to their proper torque as
soon as possible.
Wheel nut tightening torque:
Steel wheel & aluminium alloy wheel:
9~11 kg.m (65~79 lb.ft)
OTF060007
WARNING
Wheels and wheel covers may
have sharp edges. Handle them
carefully to avoid possible
severe injury. Before putting the
wheel into place, be sure that
there is nothing on the hub or
wheel (such as mud, tar, gravel,
etc.) that prevents with the
wheel from fitting solidly
against the hub.
If there is, remove it. If the con-
tact of the mounting surface
between the wheel and hub is
not good the wheel nuts could
come loose and cause the loss
of a wheel. Loss of a wheel may
result in loss of control of the
vehicle. This may cause serious
injury or death.

Maintenance
14
7
Parking brake
Inspect the parking brake system includ-
ing the parking brake pedal and cables.
Brake discs, pads, calipers and
rotors
Check the pads for excessive wear, discs
for run out and wear, and calipers for fluid
leakage.
Exhaust pipe and muffler
Visually inspect the exhaust pipes, muf-
fler and hangers for cracks, deterioration,
or damage. Start the engine and listen
carefully for any exhaust gas leakage.
Tighten connections or replace parts as
necessary.
Suspension mounting bolts
Check the suspension connections for
looseness or damage. Retighten to the
specified torque.
Steering gear box, linkage &
boots/lower arm ball joint
With the vehicle stopped and engine off,
check for excessive free-play in the
steering wheel.
Check the linkage for bends or damage.
Check the dust boots and ball joints for
deterioration, cracks, or damage.
Replace any damaged parts.
Drive shafts and boots
Check the drive shafts, boots and clamps
for cracks, deterioration, or damage.
Replace any damaged parts and, if nec-
essary, repack the grease.
Air conditioning refrigerant
Check the air conditioning lines and con-
nections for leakage and damage.

83
Specifications, Consumer information, Reporting safety defects
TIRES AND WHEELS
CAUTION
When replacing tires, use the samesize originally supplied with thevehicle.
Using tires of a different size candamage the related parts or make itwork irregularly.
* Normal load : Up to 3 persons
Inflation pressure
kPa (psi)
Front Rear Front Rear
P205/65R16 94H 6.5J×16 225 (33) 225 (33) 225 (33) 225 (33) P215/55R17 93V 6.5J×17 225 (33) 225 (33) 225 (33) 225 (33) 225/45R18 95V 7.5J×18 240 (35) 240 (35) 240 (35) 240 (35)
T125/80D16 97M 4.0T×16 420 420 420 420
(60) (60) (60) (60)
T135/80D17 103M 4.0T×17 420 420 420 420
(60) (60) (60) (60)
Full size tire
Compact
spare tire Wheel lug nut torque
kg•m (lb N
9~11
(65~79, 88~107)
Item
Tire
size Wheel size
Normal load
*Maximum load