tires LEXUS LX470 2007 Owner's Guide

376
6-1. Specifications
Tires and wheels
Ti r e s i z eP275/60R18 111H
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Normal driving
Front tires:
29 psi (200 kPa, 2.0 kgf/cm
2 or bar)
Rear tires:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Spare tire:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Trailer towing Front tires:
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Rear tires:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Spare tire:
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Wheel size18  8 J
Wheel nut torque97 ft•lbf (131 N•m, 13.4 kgf•m)

381
6-1. Specifications
6
Vehicle specifications
Tire information
Ty p i c a l t i r e s y m b o l s
Tire size(P. 383)
DOT and Tire Identification Number (TIN) ( P. 382)
Location of tread wear indicators ( P. 384)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a tire.
Summer tire or all season tire ( P. 2 9 7 )
An all season tire has “M+S” on the si dewall. A tire not marked “M+S” is a
summer 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 an d 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.
Load limit at maximum cold tire inflation pressure ( P. 386)
Maximum cold tire inflation pressure ( P. 386)
This means the pressure to which a tire may be inflated.

384
6-1. Specifications
Tire section namesBead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer
Uniform Tire Quality GradingThis information has b een prepared in accorda nce with regulations
issued by the National Highway Tr affic Safety Administration of the
U.S.A. 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 an y questions you may have as you read
this information.
■ DOT quality grades
All passenger vehicle tires must co nform 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

385
6-1. Specifications
6
Vehicle specifications
■Treadwear
The treadwear grade is a comparative rating based on the wear rate of
the tire when tested under controll ed 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 de pends upon the actual conditions of
their use, however, and may depart significantly from the norm due to varia-
tions in driving habits, service practices and differences in road characteris-
tics and climate.
■ 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 condit ions 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 hi ghest), 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 Mo tor 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.

393
6
Vehicle specifications
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Moon roof• After reconnecting or changing the battery
• After changing a fuseP. 4 2
Variable gear ratio
steeringP. 1 4 4
Engine oil maintenance
data• After changing engine oilP. 2 8 0
Tire pressure warning
system
• When rotating the tires on vehicles differing with front and rear tire infla-
tion pressures.
• When changing the tire inflation pressure by changing traveling speed
or load weight, etc.
• When changing the tire size.
P. 2 9 4
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.

403
Alphabetical index
ReplacingFuses ............................................................311
Light bulbs ............................................ 320
Tires .......................................................... 346
Wireless remote control battery.................................................. 309
Reporting safety defects for U.S.A. owners .................................... 396
Roll sensing of curtain shield airbags off switch ..................................65
Roof luggage carrier ..............................34
Running board lights............................. 212
Seat belts Adjusting the seat belt ........................25
Automatic Locking Retractor (ALR) .......................................................26
Child restraint system installation ..............................................75
Cleaning and maintaining the seat belts..................................... 263
Emergency Locking Retractor (ELR) ........................................................26
How to wear your seat belt..............24
How your child should wear the seat belt........................................... 27
Pregnant women, proper seat belt use.......................... 27
Reminder light..................................... 340
Seat belt extenders .............................. 28
Seat belt pretensioners.......................26
Seat heaters............................................ 230
Seating capacity .....................................155
Seats Child seats/child restraint system installation ..............................75 Cleaning ................................................. 262
Driving position memory .................... 21
Front seat adjustment ........................... 12
Front seat adjustment
precautions.............................................13
Head restraint ......................................... 23
Properly sitting in the seat ................ 52
Rear seat adjustment.............................14
Rear seat adjustment precautions........................................... 20
Seat heaters ..........................................230
Service reminder indicators ............. 107
Shift lever Automatic transmission .....................98
If the shift lever cannot be shifted from P .................................. 358
Side airbags................................................ 54
Side marker lights Switch.......................................................... 112
Wattage .................................................. 377
Side mirror Adjusting and folding.......................... 32
Driving position memory .................... 21
Spare tire Inflation pressure ................................302
Spare tire ................................................346
Spark plug................................................ 372
Specifications .........................................368
Speedometer .......................................... 104
Steering Column lock release...........................96
Fluid.......................................................... 286
Steering wheel Adjustment ...............................................30
Audio switches................................... 206
Driving position memory .................... 21
S

404
Alphabetical index
Storage feature....................................... 215
StuckIf your vehicle becomes stuck.....366
Sun visors .................................................. 221
Sunshade Roof ..............................................................42
Switch Driving mode select switch ........... 100
Fog light switch .......................................114
Ignition switch......................................... 95
Light switches ..........................................112
Power door lock switch ....................... 5
Power quarter window switch....... 40
Power window switch .........................37
Rear window wiper and washer switch ...................................................... 118
Window lock switch ........................... 38
Wipers and washer switch .............. 115
Tachometer Tachometer ........................................... 104
Tail lights Switch ..........................................................112
Wattage...................................................377
Theft deterrent system Alarm .......................................................... 49
Engine immobilizer system ..............47
Theft prevention labels ........................... 51
Tire inflation pressure .........................302
Tie-down hooks .....................................235
Tire information Glossary.................................................386
Size ...........................................................383
Tire identification number ............. 382
Uniform tire quality grading .........384 Tires
Chains....................................................... 156
Checking................................................292
If you have a flat tire ......................... 346
Inflation pressure ............................... 302
Information ............................................. 381
Pressure warning system ...............292
Replacing .............................................. 346
Rotating tires.........................................292
Size ............................................................376
Snow tires................................................ 156
Spare tire ............................................... 346
Tools........................................................... 346
Total load capacity ................................ 155
Towing Dinghy towing ...................................... 169
Emergency towing ........................... 328
Trailer towing ........................................160
TRAC (Active traction control) .......142
Trailer towing .......................................... 160
Trip information display ........................ 110
Trip meter ................................................. 104
Turn signal lights Switch ........................................................ 102
Wattage .................................................. 377
Valet key .........................................................2
Vanity lights Vanity lights........................................... 222
Wattage .................................................. 377
Vanity mirrors ........................................ 222
Vehicle identification number......... 369
VGRS (Variable gear ratio steering) ..................................................142
VSC (Vehicle stability control).........142
T
V