tire pressure Lexus IS F 2011 Using The Bluetooth Audio System /

482
5-2. Steps to take in an emergency
■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. 5 1 1 )
■When using the compact spare tire
As the compact spare tire is not equipped with the tire pressure warning valve and
transmitter, low inflation pressure of the spare tire will not be indicated. Also, if you
replace the compact spare tire after the tire pressure warning light comes on, the
light remains on.
■After completing the tire change
The tire pressure warning system must be reset. ( P. 3 9 8 )

5
When trouble arises
485
5-2. Steps to take in an emergency
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 compared to
when driving with standard tires. Be careful when driving over uneven road sur-
faces.
■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 performance.
■When replacing the tires
When removing or fitting the wheels, tire s or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-
mitter may be damaged if not handled correctly.
■To avoid damaging the tire pressu re warning valves and transmitters
Do not use liquid sealants on flat tires.

511
6-1. Specifications
6
Vehicle specifications
Steering
Tires and wheels
Free playLess than 1.2 in. (30 mm)
Ti r e s i z e
Front: 225/40R19 93Y
Rear: 255/ 35R19 96Y
Spare: T135/70R18 103M
Front and rear tire inflation pres-
sure
(Recommended cold tire inflation
pressure)
Front:
36 psi (250 kPa, 2.5 kgf/cm2 or bar)*
Rear:
36 psi (250 kPa, 2.5 kgf/cm
2 or bar)*
Spare:
60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
*: When driving at high speeds above 100 mph
(160 km/h), in countries where such speeds
are permitted by law, add 9.0 psi (60 kPa, 0.6
kgf/cm
2 or bar) to the front tires and rear tires.
Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size
Front wheels: 19  8J
Rear wheels: 19  9J
Spare wheel: 18  4T
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

517
6-1. Specifications
6
Vehicle specifications
Radial tires or bias-ply tires
A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is
a bias-ply tire.
TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly filled in the tire. A
tube type tire has a tube inside the ti re and the tube maintains the air pres-
sure.
Load limit at maximum cold tire inflation pressure ( P. 4 0 4 )
Maximum cold tire inflation pressure ( P. 511)
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform tire quality grading” that follows.
Summer tire or all season tire (P. 4 0 4 )
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
“TEMPORARY USE ONLY” ( P. 4 8 2 )
A compact spare tire is identified by the phrase “TEMPORARY USE
ONLY” molded into its sidewall. This tire is designed for temporary
emergency use only.

521
6-1. Specifications
6
Vehicle specifications
■Temperature A, B, C
The temperature grades are A (the hi ghest), B, and C, representing
the tire's resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail-
ure.
The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Mo tor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excess ive loading, either separately or in
combination, can cause heat build up and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer.
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of transmission, power
steering, power brakes, power windows, power seats,
radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)

524
6-1. Specifications
CT
A pneumatic tire with an inverted flange tire and rim
system in which the rim is designed with rim flanges
pointed radially inward and the tire is designed to fit
on the underside of the rim in a manner that encloses
the rim flanges inside the air cavity of the tire
Extra load tire
A tire designed to operate at higher loads and at
higher inflation pressures than the corresponding
standard tire
GrooveThe space between two adjacent tread ribs
InnerlinerThe layer(s) forming the inside surface of a tubeless
tire that contains the inflating medium within the tire
Innerliner separationThe parting of the innerliner from cord material in the
carcass
Intended outboard side-
wall
(a) The sidewall that contains a whitewall, bears white lettering, or bear s manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other side-
wall of the tire, or
(b) The outward facing sidewall of an asymmetrical
tire that has a particular side that must always
face outward when mounted on a vehicle
Light truck (LT) tire
A tire designated by its manufacturer as primarily
intended for use on lightweight trucks or multipur-
pose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a
given inflation pressure
Maximum load ratingThe load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible
inflation pressureThe maximum cold inflation pressure to which a tire
may be inflated
Tire related termMeaning

525
6-1. Specifications
6
Vehicle specifications
Measuring rimThe rim on which a tire is fitted for physical dimension
requirements
Open spliceAny parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameterThe overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of the side-
walls of an inflated tire, including elevations due to
labeling, decorations, or protective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipur-
pose passenger vehicles, and trucks, that have a
gross vehicle weight rating (GVWR) of 10,000 lb. or
less.
PlyA layer of rubber-coated parallel cords
Ply separationA parting of rubber compound between adjacent
plies
Pneumatic tire
A mechanical device made of rubber, chemicals, fab-
ric and steel or other mate rials, that, when mounted
on an automotive wheel, provides the traction and
contains the gas or fluid that sustains the load
Radial ply tire
A pneumatic tire in which the ply cords that extend to
the beads are laid at substantially 90 degrees to the
centerline of the tread
Reinforced tire
A tire designed to operate at higher loads and at
higher inflation pressures than the corresponding
standard tire
Section width
The linear distance between the exteriors of the side-
walls of an inflated tire, excluding elevations due to
labeling, decoration, or protective bands
Tire related termMeaning

533
6
Vehicle specifications
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Pow e r w i n d owAfter reconnecting or changing the
batteryP. 7 3
Engine oil maintenance
data (U.S.A. only)After changing engine oilP. 3 8 6
Tire pressure warning
systemWhen changing the tire inflation pres-
sure by changing traveling speedP. 3 9 7
The following items must be initialized for normal system operation in cases
such as after the battery is reconnected, or maintenance is performed on
the vehicle.

550
Abbreviation list
Abbreviation/Acronym list
ABBREVIATIONSMEANING
ABSAnti-lock Brake System
AI-SHIFTArtificial Intelligence Shift
ALRAutomatic Locking Retractor
CRSChild Restraint System
DISPDisplay
ECUElectronic Control Unit
EDREvent Data Recorder
ELREmergency Locking Retractor
EPSElectric Power Steering
GAWRGross Axle Weight Rating
I/MEmission inspection and maintenance
LATCHLower Anchors and Tethers for Children
LEDLight Emitting Diode
LSDLimited Slip Differential
MMTMethylcyclopentadienyl Manganese Tricarbonyl
M + SMud and Snow
MTBEMethyl Tertiary Butyl Ether
OBDOn Board Diagnostics
PCSPre-Collision System
SRSSupplemental Restraint System
TINTire Identification Number
TPMSTire Pressure Warning System
TRACTraction Control
VDIMVehicle Dynamics Integrated Management

561
Alphabetical index
Spare tireInflation pressure ...............................408
Storage location.................................. 477
Spark plug ............................................... 508
Specifications......................................... 502
Speedometer ........................................... 146
Steering wheel Adjustment ...............................................67
Audio switches ....................................267
Steering wheel positionmemory ................................................... 51
Storage feature ..................................... 323
Stuck If your vehicle becomes stuck .... 498
Sun visors................................................. 329
Sunshade ..................................................... 77
Switch Emergency flasher switch ..............442
Engine switch ........................................130
Fog light switch.......................................161
F-sport mode total control switch .......................................... 136, 189
Hazard light switch............................442
Ignition switch........................................130
Light switches....................................... 158 Power door lock switch .................... 42
Power window switch ........................ 73
Satellite switches................................. 332
SNOW switch ..................................... 136
Transmission shift
switches ...................................... 137, 139
Window lock switch............................ 73
Wiper and washer switch................162
Tachometer.............................................. 146
Tail lights Switch........................................................ 158
Talk switch ............................................... 293
Telephone switch .................................. 293
Theft deterrent system Alarm.......................................................... 85
Engine immobilizer system..............83
Theft prevention labels ......................... 88
Tire inflation pressure ........................ 408
Tire information Glossary .................................................. 521
Size ............................................................. 518
Tire identification number............... 518
Uniform tire quality grading .......... 519
T