wheel LEXUS LS500H 2018 Owners Manual

468 8-1. Specifications
LS500h_OM_OM50F42U_(U) 
20-inch tires (type B)

20-inch tires (type C) Tire size Front tires: 245/45RF20 99Y
Rear tires: 275/40RF20 102Y
Tire inflation pressure
(Recommended cold tire
inflation pressure) Driving under normal conditions
Front: 36 psi (250 kPa, 2.5 kgf/cm 2
or bar)
Rear: 36 psi (250 kPa, 2.5 kgf/cm 2
or bar)
Driving at high speeds above 137 mph (220 km/h) (in
countries where such speeds are permitted by law)
Add 9 psi (60 kPa, 0.6 kgf/cm 2
or bar) to the front tires and
rear tires. Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size Front wheels: 20 × 8 1/2J
Rear wheels: 20 × 9 1/2J
Wheel nut torque 103 ft•lbf (140 N•m, 14.3 kgf•m)
Tire size 245/45RF20 99V
Tire inflation pressure
(Recommended cold tire
inflation pressure) Driving under normal conditions
Front: 35 psi (240 kPa, 2.4 kgf/cm 2
or bar)
Rear: 35 psi (240 kPa, 2.4 kgf/cm 2
or bar)
Driving at high speeds above 100 mph (160 km/h) (in
countries where such speeds are permitted by law)
Add 9 psi (60 kPa, 0.6 kgf/cm 2
or bar) to the front tires and
rear tires. Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size 20 × 8 1/2J
Wheel nut torque 103 ft•lbf (140 N•m, 14.3 kgf•m)

4698-1. Specifications
LS500h_OM_OM50F42U_(U) 8
Vehicle specifications 
20-inch tires (type D) Tire size Front tires: 245/45RF20 99V
Rear tires: 275/40RF20 102V
Tire inflation pressure
(Recommended cold tire
inflation pressure) Driving under normal conditions
Front: 36 psi (250 kPa, 2.5 kgf/cm 2
or bar)
Rear: 36 psi (250 kPa, 2.5 kgf/cm 2
or bar)
Driving at high speeds above 100 mph (160 km/h) (in
countries where such speeds are permitted by law)
Add 9 psi (60 kPa, 0.6 kgf/cm 2
or bar) to the front tires and
rear tires. Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Wheel size Front wheels: 20 × 8 1/2J
Rear wheels: 20 × 9 1/2J
Wheel nut torque 103 ft•lbf (140 N•m, 14.3 kgf•m)

4738-1. Specifications
LS500h_OM_OM50F42U_(U) 8
Vehicle specifications An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a summer tire.
Type A
DOT symbol *
Tire Identification Number (TIN)
Tire manufacturer’s identification
mark
Tire size code
Manufacturer’s optional tire type
code (3 or 4 letters)
Manufacturing week
Manufacturing year *
:The DOT symbol cert ifies that the tire
conforms to applicable Federal Motor
Vehicle Safety Standards. 
Type B
DOT symbol * Tire Identification Number (TIN)
Tire manufacturer’s identification
mark
Manufacturer’s code
Manufacturing week
Manufacturing year *
: The DOT symbol certifies that the tire
conforms to applicable Federal Motor
Vehicle Safety Standards.
■
Typical tire size information
The illustration indicates typical tire
size.
Tire use (P = Passenger car, T =
Temporary use)
Section width (millimeters)
Aspect ratio (tire height to section
width)
Tire construction code (R = Radial,
D = Diagonal)
Run-flat tire code
Wheel diameter (inches)
Load index (2 digits or 3 digits)
Speed symbol (alphabet with one Typical DOT and Tire Identifica-
tion Number (TIN)
A
B
C
D
E
F
G
A Tire size B
C
D
E
F
A
B
C
D
E
F
G
H

474 8-1. Specifications
LS500h_OM_OM50F42U_(U) letter) ■
Tire dimensions
Section width
Tire height
Wheel diameter
Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer 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 pro-
spective 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
information. ■
DOT quality grades
All passenger vehicle tires must con-
form 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 condi-
tions 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 performa nce of tires depends
upon the actual conditions of their use.
Performance may differ significantly from
the norm due to variatio ns in driving habits,
service practices and differences in road
characteristics and climate.Tire section names A
B
C
A
B
C
D
E
F
G
H
I
J
K Uniform Tire Quality Grading

4758-1. Specifications
LS500h_OM_OM50F42U_(U) 8
Vehicle specifications ■
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 con-
trolled conditions on specified govern-
ment 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. ■
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 condi-
tions 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 sudd en tire failure.
Grade C corresponds to a level of perfor-
mance which all passenger car tires must
meet under the Fede ral 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 prop erly inflated and not
overloaded.
Excessive speed, unde rinflation, or exces-
sive loading, either separately or in combi-
nation, can cause heat buildup and
possible tire failure.
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 pressure 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
manufacturer
Accessory weight The combined weight (in excess of those standard
items which may be replaced) of hybrid transmis-
sion, power steering, power brakes, power win-
dows, power seats, radio and heater, to the extent
that these items are available as factory-installed
equipment (whether installed or not)

476 8-1. Specifications
LS500h_OM_OM50F42U_(U) Curb weight The weight of a motor vehicle with standard equip-
ment, 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 fol-
lows
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 produc-
tion options weighing over 5 lb. (2.3 kg) in excess of
the standard items which they replace, not previ-
ously considered in curb weight or accessory
weight, including heavy duty brakes, ride levelers,
roof rack, heavy duty 12-volt battery, and special
trim
Rim A metal support for a tire or a tire and tube assem-
bly upon which the tire beads are seated
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 de signated seating capacity
Vehicle maximum load on the tire The load on an individual ti re that is determined by
distributing to each axle its share of the maximum
loaded vehicle weight, and dividing by twoTire related term Meaning

4798-1. Specifications
LS500h_OM_OM50F42U_(U) 8
Vehicle specifications 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 su bstantially 90 degrees to
the centerline of the tread
Reinforced tire A tire designed to operat e at higher loads and at
higher inflation pressures than the corresponding
standard tire
Section width The linear distance between the exteriors of the
sidewalls 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 Referenc e Test Tire, when using the snow
traction test as described in ASTM F-1805-00,
Standard Test Method fo r Single Wheel Driving
Traction in a Straight Li ne on Snow-and Ice-Cov-
ered Surfaces, and which is marked with an Alpine
Symbol ( ) on at least one sidewall
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 ci rcumferentially around a
tire
Tread separation Pulling away of the tread from the tire carcassTire related term Meaning

480 8-1. Specifications
LS500h_OM_OM50F42U_(U) *
: Table 1 -Occupant loading and distribution for vehicle normal load for various desig-
nated seating capacitiesTreadwear 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 testingTire 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

4878-2. Customization
LS500h_OM_OM50F42U_(U) 8
Vehicle specifications *
:If equipped ■
Driving position memory ( → P.139)
■
Outside rear view mirrors ( → P.149)Door linked rear seat with
ottoman seatback position for
exiting *
More upright
than upright posi-
tion Upright position — — O —
Shift-linked rear seat reclining
function On Off — — — O
Function Default setting Customized set-
ting
Selecting doors linked to the
memory recall function Driver’s door All doors — — — O
Driver’s seat slide movement
when exiting the vehicle Full Off
O — — O
Partial
Driver’s seat height move-
ment when exiting the vehicle Off Full
O — — O
Partial
Front passenger’s seat move-
ment when exiting the vehicle On Off — — — O
Steering wheel movement Tilt only Off
O — — OTelescopic only
Tilt and telescopic
Function Default setting Customized set-
ting
Automatic mirror folding and
extending operation Linked to the
locking/ unlock-
ing of the doors Off
— — — OLinked to opera-
tion of the power
switchFunction Default setting Customized set-
ting A B C D
A B C D
A B C D

4898-2. Customization
LS500h_OM_OM50F42U_(U) 8
Vehicle specifications ■
PCS (Pre-Collision System) and FC TA (Front Cross Traffic Alert) *
( → P.209,
220, 227) *
:If equipped ■
LTA (Lane Tracing Assist) *
( → P.230)
*
:If equipped
■
LKA (Lane-Keeping Assist) *
( → P.240)Function Default setting Customized set-
ting
PCS (Pre-Collision System)
and FCTA function On Off — O — —
Adjust alert timing Middle Far
— O — —
Near
Pedestrian alert *
and FCTA
function On Off — O — —
Function Default setting Customized set-
ting
Lane centering function On Off — O — —
Steering assist function On Off — O — —
Alert type Steering wheel
vibration Buzzer — O — —
Alert sensitivity High Standard — O — —
Vehicle sway warning func-
tion On Off — O — —
Vehicle sway warning sensi-
tivity Standard High
— O — —
Low
Function Default setting Customized set-
ting
Lane centering function Off On — O — —
Steering assist function On Off — O — —
Alert type Steering wheel
vibration Buzzer — O — —
Alert sensitivity Standard High — O — — A B C D
A B C D
A B C D