2018 Lexus GS F tires

536
GS350_300_GS F_OM_OM30G34U_(U)8-1. Specifications
Tire size
(→ P. 537)
DOT and Tire Identification Number (TIN) (→ P. 537)
Location of trea dwear indicators (→ P. 393)
Tire ply composition and materials
Plies are layers of rubber-c oated parallel cords. Cords are the strands which form the
plies in a tire.
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 put into the tire. A tube type tire
has a tube inside the tire and the tube maintains the air pressure.
Load limit at maximum cold tire inflation pressure (→ P. 540)
Maximum cold tire inflation pressure (→ P. 540)
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 tires or all season tires (→ P. 397)
An all season tire has “M+S” on the side wall. A tire not marked “M+S” is a summer
tire.
“TEMPORARY USE ONLY”
A compact spare tire is identified by the phrase “TEMPORARY USE ONLY” molded
on its sidewall. This tire is designed for temporary emergency use only.
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GS350_300_GS F_OM_OM30G34U_(U)
5398-1. Specifications
8
Vehicle specifications
This information has been prepared in accordance with regulations issued by the
National Highway Traffic Safety Administra tion of the U.S. Department of Trans-
portation.
It provides the purchasers and/or prospe ctive purchasers of Lexus vehicles with
information on uniform tire quality grading.
Your Lexus dealer will help answer any ques tions you may have as you read this infor-
mation.
■DOT quality grades
All passenger vehicle tires must conform to Federal Safety Requirements in
addition to these grades. Quality grades can be found where applicable on
the tire sidewall between tread shoulder and maximum section width.
For example: Treadwear 200 Traction AA Temperature A
■Treadwear
The treadwear grade is a comparative rati ng based on the wear rate of the tire
when tested under controlled conditio ns on a specified government test
course.
For example, a tire graded 150 would wear one and a half (1 - 1/2) times as well on
the government course as a tire graded 100.
The relative performance of tires depends upon the actua l conditions of their use.
Performance may differ significantly from the norm due to variations in driving
habits, service practices and difference s in road characteristics and climate.
■Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and they rep-
resent the tire’s ability to stop on wet pavement as measured under controlled
conditions on specified government test surfaces of asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking (straight
ahead) traction tests and does not include cornering (turning) traction.
Uniform Tire Quality Grading

540
GS350_300_GS F_OM_OM30G34U_(U)8-1. Specifications
■Temperature A, B, C
The temperature grades are A (the highes
t), 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 ma terial of the tire to degenerate and
reduce tire life, and excessive temperature can lead to sudden tire failure.
Grade C corresponds to a level of perfor mance 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 of a tire assume that it is properly inflated and
not overloaded.
Excessive speed, underi nflation, or excessive loading, either separately or in com-
bination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire 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 un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in exce ss of those standard items
which may be replaced) of automatic 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)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning 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 numb er of occupants specified
in the second column of Table 1
* that follows

560
GS350_300_GS F_OM_OM30G34U_(U)8-3. Initialization
Items to initialize
*1: U.S.A. only
*2: GS350/GS300
The following items must be initialized for normal system operation after such
cases as the battery being reconnected
, or maintenance being performed on
the vehicle:
ItemWhen to initializeReference
Message indicating mainte-
nance is required
*1• After the maintenance is per- formedP. 366
Oil maintenance*2• After the maintenance is per-
formedP. 384
Tire pressure warning system
• When rotating the tires
• When changing the tire inflationpressure by changing traveling
speed or load weight, etc.
P. 395

591Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Radar cruise control (dynamic radar cruise control with
full-speed range) ............................... 258
Radiator ....................................................388
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system .............319
Rear door sunshades ............................341
Rear personal lights............................. 328
Rear side marker lights ........................216 Light switch ............................................ 216
Replacing light bulbs ........................420
Welcome light illumination control ......................... 138
Rear seat heaters.................................. 323
Rear sunshade .........................................341 Operation ............................................... 341
Reverse operation feature............. 342 Rear turn signal lights ........................... 210
Replacing light bulbs ....................... 420
Turn signal lever ...................................210
Rear view mirror Inside rear view mirror......................169
Outside rear view mirrors ................ 171
Rear view monitor system
*
Rear window defoggers ...................... 314
Refueling.................................................. 228 Capacity................................................... 521
Fuel types................................................. 521
Opening the fuel tank cap ............ 229
When the fuel filler door cannot be opened ......................... 230
Remote Touch
*.................................... 302
Replacing Electronic key battery .......................410
Fuses .......................................................... 412
Light bulbs...............................................418
Tires ...........................................................472
Rev indicator .....................................88, 95
Rev peak ............................................. 88, 96
Reporting safety defects for U.S. owners .................................. 562
Resetting the message indicating maintenance is required ................ 366
R
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

593Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
S-FLOW mode ..................................... 309
Shift lever ................................................. 202Automatic transmission ..................202
If the shift lever cannot be shifted from P ........... 208
Shift lever light ....................................... 327
Shift lock system.................................... 207
Side airbags ............................................... 42
Side display ............................................. 306
Side marker lights...................................216 Light switch ............................................ 216
Replacing light bulbs ........................420
Welcome light illumination control ................................................... 138
Side mirrors ............................................... 171 Adjusting and folding.......................... 171
BSM (Blind spot monitor) .............278
Linked mirror function when reversing ..................................173
Mirror position memory .................. 160
Side turn signal lights ........................... 210 Replacing light bulbs ........................420
Turn signal lever .................................. 210
Smart access system with push-button start ...................... 150 Antenna location ................................. 150
Entry functions .......................................137
Starting the engine ..............................197
Warning message .............................. 441
Snow mode ............................................. 203
Snow tires ................................................300 Spare tire .................................................. 472
Inflation pressure................................528
Storage location ................................. 473
Spark plug ............................................... 525
Specifications...........................................518
Speed indicator........................................ 95
Speedometer .................................... 87, 94
Sport mode .............................................. 273
Steering lock ............................................ 199 Column lock release .........................199
Steering lock system warning message........................... 470
Steering wheel ........................................168 Adjustment............................................. 168
Audio switches
*
Heated steering wheel ................... 322
Power easy access system ............ 160
Steering wheel position memory ............................. 160
Stop lights Replacing light bulbs ....................... 420
Storage feature ..................................... 330
Storage precautions ........................... 330
Stuck If the vehicle becomes stuck......... 515
Sun shade Rear ............................................................ 341
Rear door ................................................ 341
Roof ............................................................ 179
Sun visors................................................. 338
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

595Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Tachometer ....................................... 87, 94Variable red zone................................. 97
Tail lights.....................................................216 Light switch ............................................ 216
Replacing light bulbs ........................420
Welcome light illumination control ................................................... 138
Talk switch
*
Telephone switches*
Theft deterrent system Alarm........................................................... 74
Engine immobilizer system.............. 72
Tire inflation pressure ......................... 528 Maintenance data ............................. 528
Tire inflation pressure display function ................................................394
Warning light .......................................436
Warning message .............................. 441
Tire information ..................................... 535 Glossary ................................................ 540
Size ............................................................537
Tire identification number..............537
Uniform Tire Quality Grading.............................................. 539
Tire pressure warning system ......... 394 Function ..................................................394
Initializing............................................... 395
Installing tire pressure warning valves and transmitters ................394
Registering ID codes ...................... 396
Warning light .......................................436
Warning message .............................. 441 Tires ........................................................... 393
Chains ..................................................... 298
Checking ............................................... 393
Emergency tire puncture repair kit ..............................................483
If you have a flat tire .............. 472, 483
Inflation pressure................................528
Information............................................535
Replacing ................................................472
Rotating tires ........................................ 394
Size ...........................................................528
Snow tires ............................................. 300
Spare tire.................................................472
Tire inflation pressure display function................................................ 394
Tire pressure warning system ..... 394
Warning light ....................................... 436
Warning message............................... 441
Tools ...........................................................473
Top tether strap ....................................... 68
Torque Vectoring Differential (TVD) ..................................................... 286
Total load capacity................................. 194
Towing Dinghy towing .......................................196
Emergency towing ........................... 426
Towing eyelet ...................................... 428
Trailer towing.........................................195
TRAC (Traction Control) Function ..................................................288
TRAC OFF switch ............................290
T
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.