2010 Lexus IS F inflation pressure

498
6-1. 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)

504
6-1. 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 tire and the tube maintains the air pres-
sure.
Load limit at maximum cold tire inflation pressure (P. 3 9 2 )
Maximum cold tire inflation pressure (P. 4 9 8 )
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. 3 9 2 )
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
“TEMPORARY USE ONLY” (P. 470)
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.

508
6-1. Specifications
■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)

511
6-1. Specifications
6
Vehicle specifications
Tire related termMeaning
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

512
6-1. Specifications
Tire related termMeaning
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

520
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Pow e r w i n d owAfter reconnecting or changing the
batteryP. 6 9
Engine oil maintenance
dataAfter changing engine oilP. 3 74
Tire pressure warning
systemWhen changing the tire inflation pres-
sure by changing traveling speedP. 3 8 6
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.

535
Alphabetical index
Head restraints ...................................... 54
Properly sitting in the seat................ 83
Seat heaters.......................................... 325
Service reminder indicators ............. 143
Shift lever
If the shift lever cannot be
shifted from P ................................... 475
Transmission .......................................... 128
Shift lever light ....................................... 306
Shift lock system ....................................475
Shopping bag hooks ........................... 332
Side airbags ............................................... 85
Side marker lights
Switch ....................................................... 150
Side mirrors
Adjusting and folding ..........................67
Mirror position memory ................... 48
Smart access system with
push-button start
Entry function ..........................................26
Starting the engine.............................. 124
“SOS” button ......................................... 345
Spare tire
Inflation pressure ............................... 397
Storage location................................. 465
Spark plug ............................................... 495
Specifications......................................... 490
Speedometer ........................................... 139
Steering wheel
Adjustment ...............................................64
Audio switches ................................... 254
Steering wheel position
memory ................................................. 48
Storage feature .......................................310
Stuck
If your vehicle becomes stuck .... 486Sun visors .................................................. 316
Sunshade ..................................................... 72
Switch
Emergency flasher switch ............ 430
Engine switch .........................................124
Fog light switch .................................... 153
F-sport mode total control
switch.......................................... 130, 180
Hazard light switch .......................... 430
Ignition switch ........................................124
Light switches ....................................... 150
Power door lock switch .................... 39
Power window switch ........................69
Satellite switches.................................. 319
Transmission shift
switches ...................................... 130, 132
Window lock switch............................69
Wiper and washer switch............... 154
Tachometer.............................................. 139
Tail lights
Switch........................................................ 150
Talk switch .............................................. 280
Telephone switch ................................. 280
Theft deterrent system
Alarm.......................................................... 80
Engine immobilizer system.............. 78
Theft prevention labels .......................... 82
Tire inflation pressure ......................... 397
Tire information
Glossary ................................................ 508
Size ........................................................... 505
Tire identification number............. 505
Uniform tire quality grading ........ 506
T

536
Alphabetical index
Tires
Chains ....................................................... 192
Checking ...............................................386
If you have a flat tire ..........................465
Inflation pressure................................ 397
Inflation pressure sensor................386
Information............................................503
Replacing ...............................................465
Rotating tires ........................................386
Size ...........................................................498
Snow tires ................................................ 192
Tools ...........................................................465
Total load capacity ..................................191
Towing
Dinghy towing ...................................... 195
Emergency towing ............................. 431
Trailer towing.........................................194
TRAC........................................................... 177
Traction control ....................................... 177
Transmission shift switches ...... 130, 132
Trip meter ................................................. 139
Trunk
Extending trunk space .................... 328
Opener ...................................................... 43
Trunk light
Trunk light................................................. 44
Wattage.................................................. 499
Turn signal lights
Replacing light bulbs........................ 424
Switch ........................................................136
Wattage.................................................. 499Vanity lights
Vanity lights............................................ 317
Wattage ................................................. 499
Vanity mirrors .......................................... 317
VDIM........................................................... 177
Vehicle dynamics integrated
management ......................................... 177
Vehicle identification number...........491
Vehicle stability control ....................... 177
Voice command switch .....................280
VSC ............................................................. 177
Warning buzzers
Brake system ......................................... 441
Open door ...........................................444
Seat belt reminder .............................444
Warning lights
Anti-lock brake system ...................442
Brake assist system ...........................442
Brake system ......................................... 441
Charging system ................................442
Electric power steering
warning light......................................442
Low fuel level........................................444
Malfunction indicator lamp ...........442
Master warning light.........................444
Open door ............................................444
Pre-collision system..........................442
Pretensioners .......................................442
Seat belt reminder light ...................444
SRS airbags ...........................................442
Tire pressure warning
light.........................................................444V
W