2014 Lexus IS F inflation pressure

527
6-1. Specifications
6
Vehicle specifications
IS F_U
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
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 /2J
Rear wheels: 19 × 9 1 /2J
Spare wheel: 18 × 4T
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

533
6-1. Specifications
6
Vehicle specifications
IS F_U
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 tire and the tube maintains the air pres-
sure.
Load limit at maximum cold tire inflation pressure ( →P. 423)
Maximum cold tire inflation pressure ( →P. 5 2 7 )
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. 423)
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 9 8 )
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.

537
6-1. Specifications
6
Vehicle specifications
IS F_U■
Temperature A, B, C
The temperature grades are A (the highest), 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 Motor 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 excessive loading, either separately or in
combination, can cause heat buildup 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)

540
6-1. Specifications
IS F_U
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 bears 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

541
6-1. Specifications
6
Vehicle specifications
IS F_U
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 materials, 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

549
6
Vehicle specifications
IS F_U
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Po w e r w i n d o wAfter reconnecting or changing the
batteryP. 7 8
Maintenance data
(U.S.A. only)After the maintenance is performedP. 3 9 2
Tire pressure warning
systemWhen changing the tire inflation pres-
sure by changing traveling speedP. 4 1 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.

577
Alphabetical index
IS F_U
Spare tireInflation pressure ............................... 428
Storage location................................. 493
Spark plug ................................................524
Specifications...........................................518
Speedometer........................................... 154
Steering wheel Adjustment ............................................... 72
Audio switches ..................................... 281
Steering wheel position
memory ................................................. 56
Storage feature ..................................... 338
Stuck If your vehicle becomes stuck ......514
Sun visors................................................. 345
Sunshade .................................................... 82
Switch Emergency flasher switch ............. 460
Engine switch ........................................138
Fog light switch..................................... 170
F-sport mode total control switch .........................................144, 203
Hazard light switch...........................460
Ignition switch........................................138
Light switches........................................ 166 Power door lock switch .................... 46
Power window switch ........................ 78
Satellite switches................................ 348
SNOW switch ......................................144
Transmission shift
switches ...................................... 145, 147
VSC off switch ....................................202
Window lock switch............................ 78
Wiper and washer switch................ 172
Tachometer.............................................. 154
Tail lights Switch........................................................ 166
Talk switch* ............................................ 308
Telephone switch*............................... 308
Theft deterrent system
Alarm...........................................................90
Engine immobilizer system............. 88
Theft prevention labels .......................... 93
Tire inflation pressure .........................428
Tire information Glossary .................................................537
Size............................................................534
Tire identification number..............534
Uniform tire quality grading ........ 535
T
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

578
Alphabetical index
IS F_U
TiresChains .......................................................218
Checking ................................................. 417
If you have a flat tire.......................... 493
Inflation pressure................................ 428
Inflation pressure sensor.................. 417
Information............................................ 532
Replacing............................................... 493
Rotating tires .......................................... 417
Size ........................................................... 527
Snow tires ................................................218
Tools ...........................................................493
Total load capacity .................................217
Towing
Dinghy towing ....................................... 221
Emergency towing .............................461
Trailer towing....................................... 220
TRAC.......................................................... 201
Traction control ...................................... 201
Transmission shift switches .......145, 147
Trip meter ................................................. 154
Trunk
Extending trunk space .................... 357
Opener ........................................................ 51
Trunk light Trunk light................................................. 52
Wattage..................................................528 Turn signal lights
Replacing light bulbs ....................... 454
Switch.......................................................... 151
Wattage ................................................. 528
USB port* .................................... 260, 268
Vanity lights Vanity lights.......................................... 346
Wattage ................................................. 528
Vanity mirrors ........................................ 346
VDIM.......................................................... 201
Vehicle data recordings ......................... 21
Vehicle dynamics integrated management ........................................ 201
Vehicle identification number .......... 519
Vehicle stability control ...................... 201
Voice command switch .....................308
VSC ............................................................ 201
Warning buzzers
Brake system....................................... 469
Open door ........................................... 472
Seat belt reminder ............................. 472
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