2016 Lexus GS450h tires

GS450h_OM_OM30E99U_(U)
4858-1. Specifications
8
Vehicle specifications
This information has been prepared in accordance with regulations issued by the
National Highway Traffic Safety Administration of the U.S. Department of Trans-
portation.
It provides the purchasers and/or prospective purchasers of Lexus vehicles with
information on uniform tire quality grading.
Your Lexus dealer will help answer any questions 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 grad es can be found where applicable on
the tire sidewall between tread shoulder and maximum section width.
For example: Treadwear 200 Traction AA Temperature A
■Tr e a d w e a r
The treadwear grade is a comparative rati ng based on the wear rate of the tire
when tested under controlled conditions 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 actual conditions of their use.
Performance may differ significantly from the norm due to variations in driving
habits, service practices and differences in road characteristics and climate.
■Tr a c t i o n A A , 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 we t pavement as measured under controlled
conditions on specified government te st 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

486
GS450h_OM_OM30E99U_(U)
8-1. 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 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, underinflation, or excessiv e 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 pressure 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 excess of those standard items
which may be replaced) of hybrid transmission, power
steering, power brakes, power windows, power seats,
radio and heater, to the extent that these items are avail-
able as factory-installed eq uipment (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

504
GS450h_OM_OM30E99U_(U)
8-3. Initialization
Items to initialize
*: U.S.A. only
The following items must be initialized for normal system operation after such
cases as the 12-volt battery being reconnected, or maintenance being per-
formed on the vehicle:
ItemWhen to initializeReference
Message indicating mainte-
nance is required*• After the maintenance is per- formedP. 3 4 0
Oil maintenance• After the maintenance is per-
formedP. 3 5 3
Tire pressure warning system
• When rotating the tires
• When changing the tire inflationpressure by changing traveling
speed or load weight, etc.
P. 3 6 3

535Alphabetical index
GS450h_OM_OM30E99U_(U)
Radar cruise control (dynamic radar cruise control with
full-speed range) .................................241
Radiator .................................................... 355
Radio
*
RBDS (Radio Broadcast Data Systems)
*
Rear air conditioning system ........... 296
Rear door sunshades ............................316
Rear personal lights............................. 303
Rear side marker lights ........................ 197 Light switch .............................................197
Replacing light bulbs ....................... 388
Welcome light illumination control ........................... 121
Rear seat heaters..................................300
Rear sunshade .........................................316 Operation ............................................... 316
Reverse operation feature...............317
Rear turn signal lights ...........................192 Replacing light bulbs ....................... 388
Turn signal lever .................................. 192
Rear view mirror Inside rear view mirror ..................... 152
Outside rear view mirrors .............. 154
Rear view monitor system
*
Rear window defoggers ......................291
Refueling ................................................... 210 Capacity ................................................ 468
Fuel types .............................................. 468
Opening the fuel tank cap................ 211
When the fuel filler door cannot be opened ........................... 212 Regenerative braking............................. 67
Remote Touch
*.................................... 280
Replacing Electronic key battery ......................377
Fuses ........................................................ 379
Light bulbs.............................................386
Tires .......................................................... 437
Reporting safety defects for U.S. owners .................................. 506
Resetting the message indicating maintenance is required ................ 340
Rev indicator ............................................. 88
Rev peak ..................................................... 88
Road accident cautions ......................... 72
Seat belts .................................................... 30 Adjusting the seat belt........................ 30
Automatic Locking Retractor .......... 31
Child restraint system installation ............................................. 59
Cleaning and maintaining the seat belt ....................................... 337
Emergency Locking Retractor (ELR) ................................... 31
How to wear your seat belt............. 30
How your child should wear the seat belt ...........................................32
Pregnant women, proper seat belt use ......................................... 33
Reminder light and buzzer ........... 402
Seat belt extender .................................32
Seat belt pretensioners ........................ 31
SRS warning light ............................. 400
R
S
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

536Alphabetical index
GS450h_OM_OM30E99U_(U)
Seat heaters ............................................300
Seat position memory...........................143
Seat ventilators ......................................300
Seating capacity...................................... 177
Seats.............................................................. 141Adjustment ............................................... 141
Adjustment precautions ...................142
Child seats/child restraint system installation.............................. 57
Cleaning .................................................336
Driving position memory ................ 143
Head restraints ..................................... 148
Power easy access system ............ 143
Properly sitting in the seat ................ 28
Seat heaters ......................................... 300
Seat position memory....................... 143
Seat ventilators ................................... 300
Sensor Automatic headlight system .......... 198
Inside rear view mirror ..................... 153
Intuitive parking assist
*
LKA (Lane-Keeping Assist) ......... 232
Radar sensor ............................. 216, 260
Rain-sensing windshield wipers .................................................. 208
Service plug ............................................... 70
Service reminder indicators ............... 80 S-FLOW mode..................................... 286
Shift lever ................................................... 187
Hybrid transmission ...........................187
If the shift lever cannot be shifted from P ............ 448
Shift lever light ....................................... 302
Shift lock system ................................... 448
Side airbags ................................................36
Side display ............................................. 283
Side marker lights .................................. 197 Light switch............................................. 197
Replacing light bulbs ...................... 388
Welcome light illumination control......................................................121
Side mirrors .............................................. 154 Adjusting and folding ........................154
BSM (Blind spot monitor) ............258
Linked mirror function when reversing..................................156
Mirror position memory .................. 143
Side turn signal lights ............................ 192 Replacing light bulbs ...................... 388
Turn signal lever ................................... 192
Smart access system with push-button start ....................... 133Antenna location.................................. 133
Entry functions ......................................120
Starting the hybrid system.............. 180
Warning message.............................406
Snow mode .............................................. 188
Snow tires ................................................. 277

538Alphabetical index
GS450h_OM_OM30E99U_(U)
Power door lock switch ...................122
Power switch.........................................180
Power window switches ................. 158
Rear sunshade switch ....................... 316
Rear window and outside rear view mirror defoggers
switch..................................................... 291
Seat heater switches........................ 300
Seat ventilator switches ................. 300
Snow mode switch.............................188
“SOS” button........................................326
Talk switch
*
Telephone switches*
Tilt and telescopic steering control switch ................... 151
Trunk closer switch ............................. 127
Trunk opener switch ......................... 126
Trunk opener main switch.............. 128
Vehicle-to-vehicle distance button ................................................... 247
VSC OFF switch .............................. 268
Window lock switch.......................... 158
Windshield wipers and washer switch .........................204
Tachometer .....................................86, 103
Tail lights..................................................... 197 Light switch .............................................197
Replacing light bulbs ....................... 388
Welcome light illumination control ..................................................... 121 Talk switch
*
Telephone switches*
Theft deterrent system
Alarm ........................................................... 77
Immobilizer system...............................74
Tire inflation pressure..........................473 Maintenance data.............................. 473
Tire inflation pressure display function................................................ 362
Warning light ....................................... 402
Warning message.............................406
Tire information ...................................... 481 Glossary.................................................486
Size ...........................................................483
Tire identification number .............483
Uniform Tire Quality Grading ..............................................485
Tire pressure warning system ..........362 Function .................................................. 362
Initializing ............................................... 363
Installing tire pressure warning valves and transmitters................ 362
Registering ID codes ....................... 364
Warning light ....................................... 402
Warning message.............................406
Tires ............................................................. 361 Chains ..................................................... 275
Checking .................................................361
If you have a flat tire .......................... 437
Inflation pressure................................ 473
Information..............................................481
T

539Alphabetical index
GS450h_OM_OM30E99U_(U)
Replacing ............................................... 437
Rotating tires ........................................362
Size ............................................................ 473
Snow tires .............................................. 277
Spare tire ................................................ 437
Tire inflation pressure display function ................................................362
Tire pressure warning system .....362
Warning light .......................................402
Warning message ............................ 406
Tools........................................................... 438
Top tether strap........................................ 62
Total load capacity ................................. 177
Towing Dinghy towing .......................................179
Emergency towing ............................394
Towing eyelet...................................... 396
Trailer towing ........................................ 178
TRAC (Traction Control) Function ..................................................266
TRAC OFF switch ........................... 268
Traction battery (hybrid battery) ...... 70
Traction motor (electric motor) ........ 66
Transmission .............................................187 Driving mode select switch ..........256
Hybrid transmission........................... 187
If the shift lever cannot be shifted from P .................................. 448
Paddle shift switches ......................... 189
S mode ..................................................... 190
Trip information........................................ 86
Trip meters ................................................. 86 Trunk ........................................................... 126
Internal trunk release lever ............. 129
Jam protection function....................128
Luggage security system.................128
Open trunk warning message....406
Power trunk opener and closer ............................................ 126
Smart access system with push-button start.................... 126
Trunk closer switch............................. 127
Trunk easy closer ................................128
Trunk features....................................... 310
Trunk grip ................................................ 127
Trunk light................................................128
Trunk opener main switch ..............128
Trunk opener switch .......................... 126
Wireless remote control.................. 127
Trunk light.................................................. 128 Trunk light................................................128
Wattage ..................................................477
Turn signal lights ..................................... 192 Replacing light bulbs .......... 387, 388
Turn signal lever ................................... 192
Wattage ..................................................477
USB port
*
U
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.