2012 Lexus GX460 tires

5
When trouble arises
747
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
If the vehicle becomes stuck
Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt, or snow:
Stop the engine. Set the parking brake and shift the shift lever
to P.
Remove the mud, snow, or sand from around the stuck tire.
Place wood, stones or some other material to help provide
traction under the tires.
Restart the engine.
Lock the center differential. (→ P. 323)
Release the parking brake and shift the shift lever to the D or R
position and carefully apply the accelerator to free the vehicle.
Turn off TRAC and VSC if these functions are hampering your
attempts to free the vehicle. ( →P. 3 3 8 )
STEP1
STEP2
STEP3
STEP4
STEP5
STEP6

762
6-1. Specifications
GX460_U.S.A. (OM60J00U)
Chassis lubrication
Steering
Tires and wheels
Propeller shafts
Spiders
Slide yokeLithium base chassis grease, NLGI No.2
Molybdenum-disulfide lithium base chassis
grease, NLGI No.2 or lithium base chassis
grease, NLGI No.2
Free playLess than 1.18 in. (30 mm)
Power steering fluid typeAutomatic transmission fluid DEXRON® II
or III
Ti r e s i z eP265/60R18 109H
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Driving under normal conditions Front:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Rear:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Spare:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Wheel size18 × 7 1 /2 J
Wheel nut torque83 ft•lbf (112 N•m, 11.4 kgf•m)

768
6-1. Specifications
GX460_U.S.A. (OM60J00U)
Tire information
Ty p i c a l t i r e s y m b o l s
Tire size(→ P. 7 7 0 )
DOT and Tire Identification Number (TIN) (→P. 76 9 )
Location of treadwear indicators (→ P. 6 2 8 )
Tire ply composition and materials
Plies are layers of rubber-coated 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 filled in the tire. A
tube type tire has a tube inside the ti re and the tube maintains the air pres-
sure.

772
6-1. Specifications
GX460_U.S.A. (OM60J00U)
Uniform Tire Quality Grading
This information has been prepared in accordance with regulations
issued by the National Highway Traffic Safety Administration of the U.S.
Department of Transportation.
It provides the purchasers and/or prospective purchasers of Lexus vehi-
cles with information on uniform tire quality grading.
Your Lexus dealer will help answer any questions you may have as you read
this information.
■ DOT quality grades
All passenger vehicle tires must conform to Federal Safety Require-
ments 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 rating based on the wear rate of
the tire when tested under controlled conditions on a specified gov-
ernment 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 varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.

773
6-1. Specifications
6
Vehicle specifications
GX460_U.S.A. (OM60J00U)■
Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and
they represent 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) trac-
tion.
■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 of a tire assume that it 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.

827
Alphabetical index
GX460_U.S.A. (OM60J00U)
Personal lightsPersonal lights.......................................519
Switch ........................................................ 521
Wattage ................................................. 763
Power steering Fluid ............................................................ 621
Power outlet ................................ 542, 544
Power windows........................................ 101
Pre-Collision System.......................... 343
Radar cruise control ........................... 250
Radiator......................................................618
Radio ........................................................... 415
RDS (Radio Date System).................. 417
Rear height control air suspension ....................................... 316
Rear seat Adjustment ...............................................67
Folding down the second seatbacks ..................................... 69, 70
Folding down the third seats ........... 72
Rear side marker lights
Replacing light bulbs ....................... 669
Wattage ................................................. 763
Rear step bumper ....................................54
Rear turn signal lights Replacing light bulbs ....................... 669
Wattage ................................................. 763
Rear view mirror Compass ............................................... 575
Rear view monitor system ..................281
Rear window defogger
*.......................411
Rear window wiper and washer .....242 Replacing
Electronic key battery ......................644
Fuses......................................................... 647
Light bulbs .............................................662
Tires ............................................................ 721
Reporting safety defects for
U.S. owners ......................................... 804
Scuff lighting ............................................ 519
Seat belts Adjusting the seat belt ........................86
Automatic Locking Retractor......... 87
Child restraint system installation.............................................. 151
Cleaning and maintaining the seat belts .................................... 594
Emergency Locking Retractor ................................................ 87
How to wear your seat belt ............ 85
How your child should wear the seat belt ......................................... 88
Pre-collision seat belts ....................... 87
Pregnant women, proper seat belt use ........................ 88
Reminder light .....................................692
Seat belt extenders ..............................89
Seat belt pretensioners ......................90
Seat heaters ............................................. 551
Seat position memory ............................ 78
Seat ventilator ......................................... 551
Seating capacity .................................... 364
R
S
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.

829
Alphabetical index
GX460_U.S.A. (OM60J00U)
Switch“ENGINE START STOP”
switch ..................................................... 179
Engine switch ........................................ 179
“2nd STRT” switch ............................. 188
Center differential lock/unlock
switch ................................................... 323
“DAC” switch ...................................... 332
Emergency flasher Switch ............ 676
Fog light switch................................... 233
Hazard light Switch .......................... 676
Heated steering wheel switch .... 549
Height control off switch .................316
Ignition switch........................................ 179
Light switches........................................ 219
Power door lock switch.................... 50
Power window switch........................ 101
“RSCA OFF” switch .......................... 137
Rear window defogger switch
*.................................................... 411
Transmission shift switch .................189
Window lock switch ........................... 101
Wipers and washer switch........... 236
Tachometer .............................................. 195
Tail lights Replacing light bulbs ........................672
Switch ........................................................ 219
Talk switch
*............................................ 490
Telephones switch
*............................ 490
Theft deterrent system Alarm ........................................................... 117
Engine immobilizer system ..............115 Tire inflation pressure .........................635
Tire information
Glossary ................................................. 774
Size............................................................770
Tire identification number..............769
Uniform Tire Quality Grading .... 772
Tires Chains .................................................... 366
Checking .............................................. 628
If you have a flat tire ............................ 721
Inflation pressure................................ 762
Information ........................................... 768
Pressure warning system.............. 628
Replacing ................................................. 721
Rotating tires ....................................... 628
Size............................................................ 762
Snow tires ............................................. 366
Spare tire .................................................. 721
Tire pressure warning system ................................................. 628
Tools .............................................................721
Total load capacity ............................... 364
Towing Dinghy towing .................................... 389
Emergency towing............................ 677
Trailer towing .......................................370
T
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.