2014 Lexus IS F tire size

433
4-3. Do-it-yourself maintenance
4
Maintenance and care
IS F_U
■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 tubeless tire.
Doing so may result in an accident, causing death or serious injury.
NOTICE
■Replacing tire inflation pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warning valves
and transmitters, make sure to have tires serviced by your Lexus dealer or other
qualified service shop. In addition, make sure to purchase your tire pressure
warning valves and transmitters at your Lexus dealer.
●Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly with non-
genuine wheels.
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
When trouble arises
477
5-2. Steps to take in an emergency
IS F_U
CAUTION
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold
and inflated to the inflation pressure recommended by the vehicle manufacturer on
the vehicle placard or tire inflation pressure label (tire and load information label).
(If your vehicle has tires of a different size than the size indicated on the vehicle
placard or tire inflation pressure label [tire and load information label], you should
determine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire pressure
monitoring system (TPMS-tire pressure warning system) that illuminates a low tire
pressure telltale (tire pressure warning light) when one or more of your tires is sig-
nificantly under-inflated. Accordingly, when the low tire pressure telltale (tire pres-
sure warning light) illuminates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling
and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a substitute for
proper tire maintenance, and it is the driver's responsibility to maintain correct tire
pressure, even if under-inflation has not reached the level to trigger illumination of
the TPMS low tire pressure telltale (tire pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system)
malfunction indicator to indicate when the system is not operating properly. The
TPMS (tire pressure warning system) malfunction indicator is combined with the
low tire pressure telltale (tire pressure warning light). When the system detects a
malfunction, the telltale will flash for approximately one minute and then remain
continuously illuminated. This sequence will continue upon subsequent vehicle
start-ups as long as the malfunction exists. When the malfunction indicator is illumi-
nated, the system may not be able to detect or signal low tire pressure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a variety of rea-
sons, including the installation of replacement or alternate tires or wheels on the
vehicle that prevent the TPMS (tire pressure warning system) from functioning
properly. Always check the TPMS (tire pressure warning system) malfunction tell-
tale after replacing one or more tires or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow the TPMS (tire pressure warning
system) to continue to function properly.

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)

532
6-1. Specifications
IS F_U
Tire information
Ty p i c a l t i r e s y m b o l s
Standard tire
Compact spare tire
Tire size (→P. 5 3 4 )
DOT and Tire Identification Number (TIN) (→ P. 5 3 4 )
Location of treadwear indicators ( →P. 417)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a tire.

534
6-1. Specifications
IS F_U
Typical DOT and tire iden tification number (TIN)
DOT symbol
*
Tire Identification Number (TIN)
Tire manufacturer's identifica-
tion mark
Tire size code
Manufacturer's optional tire
type code (3 or 4 letters)
Manufacturing week
Manufacturing year
*: The DOT symbol certifies thatthe tire conforms to applicable
Federal Motor Vehicle Safety
Standards.
Tire size
■ Typical tire size information
The illustration indicates typical
tire size.
Ti r e u s e
(P = Passenger car,
T = Temporary use)
Section width (millimeters)
Aspect ratio
(tire height to section width)
Tire construction code
(R = Radial, D = Diagonal)
Wheel diameter (inches)
Load index (2 digits or 3 digits)
Speed symbol
(alphabet with one letter)

538
6-1. Specifications
IS F_U
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and
additional weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Production options
weight
The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously
considered in curb weight or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter
(Wheel diameter)Nominal diameter of the bead seat
Rim size designationRim diameter and width
Rim type designationThe industry manufacturer's designation for a rim by
style or code
Rim widthNominal distance between rim flanges
Vehicle capacity weight
(Total load capacity)The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle's designated seating capacity
Tire related termMeaning

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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