LEXUS GX 460 (2019 year). Instruction — part 37
584
Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer
Tire section names
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2
3
4
5
6
7
8
9
10
11
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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 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 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.
■
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
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■
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 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 com-
bination, can cause heat buildup and possible tire failure.
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Glossary of tire terminology
Tire related term
Meaning
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 under that condition
Maximum inflation pres-
sure
The maximum cold inflated pressure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressure
Cold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in excess 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 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 weight
150 lb. (68 kg) times the number of occupants specified
in the second column of Table 1
*
that follows
Occupant distribution
Distribution 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 con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
Rim
A metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
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Rim diameter
(Wheel diameter)
Nominal diameter of the bead seat
Rim size designation
Rim diameter and width
Rim type designation
The industry manufacturer’s designation for a rim by
style or code
Rim width
Nominal 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
Vehicle maximum load on
the tire
The load on an individual tire that is determined by dis-
tributing to each axle its share of the maximum loaded
vehicle weight, and dividing by two
Vehicle normal load on the
tire
The load on an individual tire that is determined by dis-
tributing to each axle its share of curb weight, accessory
weight, and normal occupant weight (distributed in
accordance with Table 1
*
below), and dividing by two
Weather side
The surface area of the rim not covered by the inflated
tire
Bead
The part of the tire that is made of steel wires, wrapped
or reinforced by ply cords and that is shaped to fit the
rim
Bead separation
A breakdown of the bond between components in the
bead
Bias ply tire
A pneumatic tire in which the ply cords that extend to
the beads are laid at alternate angles substantially less
than 90 degrees to the centerline of the tread
Carcass
The tire structure, except tread and sidewall rubber
which, when inflated, bears the load
Chunking
The breaking away of pieces of the tread or sidewall
Cord
The strands forming the plies in the tire
Cord separation
The parting of cords from adjacent rubber compounds
Cracking
Any parting within the tread, sidewall, or innerliner of
the tire extending to cord material
Tire related term
Meaning
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CT
A pneumatic tire with an inverted flange tire and rim
system in which the rim is designed with rim flanges
pointed radially inward and the tire is designed to fit on
the underside of the rim in a manner that encloses the
rim flanges inside the air cavity of the tire
Extra load tire
A tire designed to operate at higher loads and at higher
inflation pressures than the corresponding standard tire
Groove
The space between two adjacent tread ribs
Innerliner
The layer(s) forming the inside surface of a tubeless tire
that contains the inflating medium within the tire
Innerliner separation
The parting of the innerliner from cord material in the
carcass
Intended outboard sidewall
(a) The sidewall that contains a whitewall, bears white
lettering, or bears manufacturer, brand, and/or
model name molding that is higher or deeper than
the same molding on the other sidewall of the tire,
or
(b) The outward facing sidewall of an asymmetrical tire
that has a particular side that must always face out-
ward when mounted on a vehicle
Light truck (LT) tire
A tire designated by its manufacturer as primarily
intended for use on lightweight trucks or multipurpose
passenger vehicles
Load rating
The maximum load that a tire is rated to carry for a given
inflation pressure
Maximum load rating
The load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible infla-
tion pressure
The maximum cold inflation pressure to which a tire may
be inflated
Measuring rim
The rim on which a tire is fitted for physical dimension
requirements
Open splice
Any parting at any junction of tread, sidewall, or inner-
liner that extends to cord material
Outer diameter
The overall diameter of an inflated new tire
Tire related term
Meaning
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Overall width
The linear distance between the exteriors of the side-
walls of an inflated tire, including elevations due to label-
ing, decorations, or protective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipurpose
passenger vehicles, and trucks, that have a gross vehicle
weight rating (GVWR) of 10,000 lb. or less.
Ply
A layer of rubber-coated parallel cords
Ply separation
A parting of rubber compound between adjacent plies
Pneumatic tire
A mechanical device made of rubber, chemicals, fabric
and steel or other materials, that, when mounted on an
automotive wheel, provides the traction and contains
the gas or fluid that sustains the load
Radial ply tire
A pneumatic tire in which the ply cords that extend to
the beads are laid at substantially 90 degrees to the
centerline of the tread
Reinforced tire
A tire designed to operate at higher loads and at higher
inflation pressures than the corresponding standard tire
Section width
The linear distance between the exteriors of the side-
walls of an inflated tire, excluding elevations due to
labeling, decoration, or protective bands
Sidewall
That portion of a tire between the tread and bead
Sidewall separation
The parting of the rubber compound from the cord
material in the sidewall
Snow tire
A tire that attains a traction index equal to or greater
than 110, compared to the ASTM E-1136 Standard Ref-
erence Test Tire, when using the snow traction test as
described in ASTM F-1805-00, Standard Test Method
for Single Wheel Driving Traction in a Straight Line on
Snow-and Ice-Covered Surfaces, and which is marked
with an Alpine Symbol (
) on at least one sidewall
Tire related term
Meaning
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*
: Table 1
Occupant loading and distribution for vehicle normal load for various des-
ignated seating capacities
Test rim
The rim on which a tire is fitted for testing, and may be
any rim listed as appropriate for use with that tire
Tread
That portion of a tire that comes into contact with the
road
Tread rib
A tread section running circumferentially around a tire
Tread separation
Pulling away of the tread from the tire carcass
Treadwear indicators (TWI)
The projections within the principal grooves designed
to give a visual indication of the degrees of wear of the
tread
Wheel-holding fixture
The fixture used to hold the wheel and tire assembly
securely during testing
Tire related term
Meaning
Designated seating capac-
ity, Number of occupants
Vehicle normal load, Num-
ber of occupants
Occupant distribution in a
normally loaded vehicle
2 through 4
2
2 in front
5 through 10
3
2 in front, 1 in second seat
11 through 15
5
2 in front, 1 in second seat, 1
in third seat, 1 in fourth seat
16 through 20
7
2 in front, 2 in second seat,
2 in third seat, 1 in fourth
seat
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Customizable features
■
Changing by using the menu switch and the “ENTER” switch
When customizing vehicle features, ensure that the vehicle is parked in a safe
place with the shift lever in P and the parking brake set.
Press and hold the menu switch to display customization mode. (
Press the “ENTER” switch upwards or downwards to select the item to be
customized.
Press the “ENTER” switch to confirm.
Press the “ENTER” switch upwards or downwards to select the desired set-
ting for the item being customized.
Press the “ENTER” switch to confirm.
When customization is completed, press the menu switch to clear the cus-
tomization screen.
■
Changing by using the multimedia system or navigation system
Press the “SETUP” button on the multimedia system or navigation system.
Select “Vehicle” on the “Setup” screen and select “Vehicle Customization”.
Various setting can be changed. Refer to the list of settings that can be
changed for details.
Your vehicle includes a variety of electronic features that can be personalized
to suit your preferences. The settings of these features can be changed by
using the steering wheel switches, the multimedia system or navigation sys-
tem or at your Lexus dealer.
It is also possible to customize certain vehicle features yourself using the
menu switch and the “ENTER” switch.
Customizing vehicle features
1
2
3
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2
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Some function settings are changed simultaneously with other functions being
customized. Contact your Lexus dealer for further details.
Settings that can be changed using the menu switch and the “ENTER” switch
Settings that can be changed using the multimedia system or navigation sys-
tem
Settings that can be changed by your Lexus dealer
Definition of symbols: O = Available, – =Not available
■
Multi-information display (
*
: The default setting varies according to countries.
Customizable features
1
2
3
Function
Default setting
Customized
setting
Language
*
English
French
O
O
O
Spanish
Units
*
miles (MPG US)
km (km/L)
O
—
O
km (L/100km)
Eco Driving Indicator Light
On
Off
O
—
O
1
2
3
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■
Door lock (
Function
Default setting
Customized
setting
Unlocking using a
mechanical key
Driver’s door
unlocked in one
step, all doors
unlocked in two
steps
All doors
unlocked in one
step
—
—
O
Speed linked door locking
function
Off
On
—
O
O
Shift position linked door
locking function
On
Off
—
O
O
Shift position linked door
unlocking function
On
Off
—
O
O
Driver’s door linked door
unlocking function
Off
On
—
O
O
1
2
3
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■
Smart access system with push-button start and wireless remote control
(
Function
Default setting
Customized
setting
Operation buzzer volume
Level 7
Off
—
O
O
Level 1 to 6
Operation signal (buzzer)
On
Off
—
—
O
Operation signal
(emergency flashers)
On
Off
—
O
O
Time elapsed before the
automatic door lock
function is activated if a
door is not opened after
being unlocked
60 seconds
Off
—
O
O
30 seconds
120 seconds
Open door warning buzzer
(when locking the vehicle)
On
Off
—
—
O
1
2
3
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■
Smart access system with push-button start (
■
Wireless remote control (
Function
Default setting
Customized
setting
Smart door unlocking
Driver’s door
All the doors
—
O
O
Smart access system with
push-button start
On
Off
—
O
O
Number of consecutive
door lock operations
2 times
As many as
desired
—
—
O
1
2
3
Function
Default setting
Customized
setting
Wireless remote control
On
Off
—
—
O
Unlocking operation
Driver’s door
unlocked in one
step, all doors
unlocked in two
steps
All doors
unlocked in one
step
—
O
O
Panic function
On
Off
—
—
O
Glass hatch opening
operation
Push and hold
(Short)
Push twice
—
—
O
One short push
Push and hold
(Long)
Off
1
2
3
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■
Automatic light control system (
*
: If equipped
Function
Default setting
Customized
setting
Time elapsed before the
headlights turn off
30 seconds
Off
—
O
O
60 seconds
90 seconds
Light sensor sensitivity
Standard
-2 to 2
—
O
O
Daytime running light sys-
tem (except for Canada)
On
Off
—
O
O
Automatic High Beam
*
On
Off
—
—
O
Welcome lighting illumina-
tion control
On
Off
—
—
O
1
2
3
598
■
Interior lights (
Function
Default setting
Customized
setting
Time elapsed before the
interior lights turn off
15 seconds
Off
—
O
O
7.5 seconds
30 seconds
Operation after the engine
switch is turned to OFF
On
Off
—
—
O
Operation when the doors
are unlocked with the smart
access system with push-
button start or wireless
remote control
On
Off
—
—
O
Operation when you
approach the vehicle with
the electronic key on your
person
On
Off
—
—
O
Shift lever light
On
Off
—
—
O
Footwell lighting
On
Off
—
—
O
Lounge illumination control
On
Off
—
—
O
1
2
3
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■
Exterior lights (
Function
Default setting
Customized
setting
Time elapsed before the
exterior lights turn off
15 seconds
Off
—
O
O
7.5 seconds
30 seconds
Operation when the doors
are unlocked with the smart
access system with push-
button start or wireless
remote control
On
Off
—
—
O
Operation when you
approach the vehicle with
the electronic key on your
person
On
Off
—
—
O
Running board lights
On
Off
—
—
O
Operation when the door is
opened
On
Off
—
—
O
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2
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