2011 Lexus IS F tires

385
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS F_EE
Tire and wheel replacement (if equipped)
CAUTION
When replacing wheels
Do not use wheels that are a different size from those recommended in the
Owner’s Manual, as this may result in loss of handling control.
Never use an inner tube in a leaking wheel which is designed for a tube-
less tire. Doing so may result in an accident, causing death or serious
injury.
Each tire and wheel is designed only for
its original position on the vehicle.
Therefore, when replacing tires and
wheels make sure that they are fitted in
the position indicated on the reverse side
of the wheel.
“FR”: Front right-hand side
“FL”: Front left-hand side
“RR”: Rear right-hand side
“RL”: Rear left-hand side

5
423
5-1. Essential information
When trouble arises
IS F_EE
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional, as soon
as possible.
Visible symptoms
Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is nor-
mal.)
Flat-looking tires or uneven tire wear
Engine coolant temperature gauge needle continually points
higher than normal
Audible symptoms
Changes in exhaust sound
Excessive tire squeal when cornering
Strange noises related to the suspension system
Pinging or other noises related to the engine
Operational symptoms
Engine missing, stumbling or running rough
Appreciable loss of power
Vehicle pulls heavily to one side when braking
Vehicle pulls heavily to one side when driving on a level
road

446
5-2. Steps to take in an emergency
IS F_EE
Replacing a flat tire
Chock the tires.
Slightly loosen the wheel nuts
(one turn).
Turn the tire jack portion “A”
by hand until the notch of the
jack is in contact with the jack
point.
STEP1
Flat tireWheel
chock posi-
Front
Left-
hand
sideBehind the
rear right-
hand side
Right-
hand
sideBehind the
rear left-
hand side
Rear
Left-
hand
sideIn front of
the front
right-hand
Right-
hand
sideIn front of
the front
left-hand
STEP2
STEP3

5
449
5-2. Steps to take in an emergency
When trouble arises
IS F_EEStow the flat tire, tire jack and all tools.
The compact spare tire
The compact spare tire is identified by the label “TEMPORARY USE
ONLY” on the tire sidewall.
Use the compact spare tire temporarily only in an emergency.
Make sure to check the tire inflation pressure of the compact spare tire.
(
P. 480)
If you have a flat rear tire on a road covered with snow or ice
Install the compact spare tire on the front of the vehicle. Perform the follow-
ing steps and fit tire chains to the rear tires.
Replace a front tire with the compact spare tire.
Replace the flat rear tire with the tire removed from the front of the
vehicle.
Fit tire chains to the rear tires.
STEP5
STEP1
STEP2
STEP3

5
451
5-2. Steps to take in an emergency
When trouble arises
IS F_EE
CAUTION
Using the tire jack
Improper use of the tire jack may lead to death or serious injuries due to the
vehicle suddenly falling off the jack.
Do not use the tire jack for any purpose other than replacing tires or
installing and removing tire chains.
Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do not use other tire jacks for replac-
ing tires on this vehicle.
Always check that the tire jack is securely set to the jack point.
Do not put any part of your body under the vehicle while it is supported
by the jack.
Do not start or run the engine while your vehicle is supported by the jack.
Do not raise the vehicle while someone is in it.
When raising the vehicle, do not put an object on or under the jack.
Do not raise the vehicle to a height greater than that required to replace the
tire.
Use a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that no one work-
ing on or near the vehicle may be injured.
Replacing a flat tire
Do not attach a heavily damaged wheel ornament, as it may fly off the
wheel while the vehicle is moving.
Failure to follow these precautions could cause the wheel nuts to loosen
and the tire to fall off, resulting in death or serious injury.
• Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened,
leading to bolt or disc wheel damage. In addition, the oil or grease can
cause the wheel nuts to loosen and the wheel may fall off, causing a
serious accident. Remove any oil or grease from the wheel bolts or
wheel nuts.
• Have the wheel nuts tightened with a torque wrench to 103 N
•m (10.5
kgf
•m, 76 ft•lbf) as soon as possible after changing wheels.

5
453
5-2. Steps to take in an emergency
When trouble arises
IS F_EE
NOTICE
Do not drive the vehicle with a flat tire.
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the
wheel beyond repair.
Be careful when driving over bumps with the compact spare tire installed on
the vehicle.
The vehicle becomes lower when driving with the compact spare tire com-
pared to when driving with standard tires. Be careful when driving over
uneven road surfaces.
Driving with tire chains and the compact spare tire
Do not fit tire chains to the compact spare tire.
Tire chains may damage the vehicle body and adversely affect driving per-
formance.

468
5-2. Steps to take in an emergency
IS F_EE
If the vehicle becomes stuck
CAUTION
When attempting to free a stuck vehicle
If you choose to rock the vehicle back and forth to free it, make sure the sur-
rounding area is clear, to avoid striking other vehicles, objects or persons.
The vehicle may also lunge forward or lunge back suddenly as it becomes
free. Use extreme caution.
When shifting the shift lever
Be careful not to shift the shift lever with the accelerator pedal depressed.
This may lead to unexpected rapid acceleration of the vehicle that may
cause an accident and result in death or serious injury.
NOTICE
To avoid damaging the transmission and other components
Avoid spinning the wheels and do not rev the engine.
If the vehicle remains stuck after trying these procedures, the vehicle may
require towing to be freed.
Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt, or snow.
Stop the engine. Set the parking brake and shift the shift
lever to P.
Remove the mud, snow, or sand from around the stuck
tire.
Place wood, stones or some other material to help pro-
vide traction under the tires.
Restart the engine.
Shift the shift lever to the D or R position, release the
parking brake and carefully apply the accelerator to free
the vehicle.STEP1
STEP2
STEP3
STEP4
STEP5

480
6-1. Specifications
IS F_EE
Tires and wheels
Tire size
Front tires: 225/40R19 93Y
Rear tires: 255/35R19 96Y
Spare tire: T135/70R18 103M
Tire inflation pressure
(front and rear)
(Recommended cold tire
inflation pressure)
Vehicle
speedFront wheel
kPa (kgf/cm2
or bar, psi)
Rear wheel
kPa (kgf/cm2
or bar, psi)
More than
250 km/h
(155 mph)
320 (3.2, 46)320 (3.2, 46)
From 210
km/h (130
mph) to 250
km/h (155
mph)
300 (3.0, 44)300 (3.0, 44)
210 km/h
(130 mph) or
less
250 (2.5, 36)250 (2.5, 36)
Tire inflation pressure
(spare)
(Recommended cold tire
inflation pressure)
420 kPa (4.2 kgf/cm2 or bar, 60 psi)
Wheel size
Ty p e A
Front wheels: 19  8J
Rear wheels: 19  9J
Spare wheel: 18  4T
Ty p e B
Front wheels: 19  8 1/2 J
Rear wheels: 19  9 1/2 J
Spare wheel: 18  4T
Wheel nut torque103 N•m (10.5 kgf•m, 76 ft•lbf)