2019 LEXUS LS500H tires

4658-1. Specifications
LS500h_OM_(U)_1809
8
Vehicle specifications
19-inch tires (type B)
20-inch tires (type A)
Tire size245/50RF19 101V
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 size19  8J
Wheel nut torque103 ft•lbf (140 N•m, 14.3 kgf•m)
Tire size245/45RF20 99Y
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 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 size20  8 1/2J
Wheel nut torque103 ft•lbf (140 N•m, 14.3 kgf•m)

4668-1. Specifications
LS500h_OM_(U)_1809
20-inch tires (type B)
20-inch tires (type C)
Tire sizeFront 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 sizeFront wheels: 20  8 1/2J
Rear wheels: 20  9 1/2J
Wheel nut torque103 ft•lbf (140 N•m, 14.3 kgf•m)
Tire size245/45RF20 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 size20  8 1/2J
Wheel nut torque103 ft•lbf (140 N•m, 14.3 kgf•m)

4678-1. Specifications
LS500h_OM_(U)_1809
8
Vehicle specifications
20-inch tires (type D)
Tire sizeFront 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 sizeFront wheels: 20  8 1/2J
Rear wheels: 20  9 1/2J
Wheel nut torque103 ft•lbf (140 N•m, 14.3 kgf•m)

4708-1. Specifications
LS500h_OM_(U)_1809
Tire size (P.471)
Run-flat tire (RFT) or standard tire ( P.439)
This vehicle can be equipped with either run-flat tires (RFT) or standard tires. A
mark is molded on the sidewall of the run-flat tire.
DOT and Tire Identification Number (TIN) ( P.471)
Location of treadwear indicators ( P.392)
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 put into the tire. A tube type tire has a
tube inside the tire and the tube maintains the air pressure.
Load limit at maximum cold tire inflation pressure ( P.393)
Maximum cold tire inflation pressure ( P.464)
This means the pressure to which a tire may be inflated.
Uniform tire quality grading
For details, see “Uniform Tire Quality Grading” that follows.
Summer tires or all season tires ( P.393)
Tire information
Typical tire symbols
A
B
C
D
E
F
G
H
I
J
K

4728-1. Specifications
LS500h_OM_(U)_1809
letter)
■Tire dimensionsSection 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 performance 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

4738-1. Specifications
LS500h_OM_(U)_1809
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 properly 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 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 under that condition
Maximum inflation pressureThe 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
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)

4948-3. Initialization
LS500h_OM_(U)_1809
8-3.Initialization
*:If equipped
Items to initialize
The following items must be initialized for normal system operation after such
cases as the 12-volt battery being re connected, or maintenance being per-
formed on the vehicle:
List of items to initialize
ItemWhen to initializeReference
PKSB (Parking Support
Brake)• After reconnecting or changing the 12-volt batteryP.282
Message indicating
maintenance is
required
• After maintenance is performedP.375
Oil maintenance• After maintenance is performedP.387
Tire pressure warning
system
• When the tire inflation pressure is changed, such as when changing trav-
eling speed or load weight.
• When the tire inflation pressure is changed, such as when the tire size is
changed.
• When rotating the tires.
• After performing the transmitter ID code registration procedure.
P.398
Lexus parking assist
monitor
*
• 12-volt battery ha s been reinstalled.
• The steering wheel has been moved while the 12-volt battery was being
reinstalled.
• 12-volt battery power is low.Refer to the “NAVI-
GATION AND MUL- TIMEDIA SYSTEM OWNER’S MAN- UAL”.
Panoramic view moni-
tor
*
• 12-volt battery ha s been reinstalled.
• The steering wheel has been moved while the 12-volt battery was being
reinstalled.
• 12-volt battery power is low.Refer to the “NAVI-
GATION AND MUL- TIMEDIA SYSTEM OWNER’S MAN- UAL”.

5171-1. What to do if... (Troubleshooting)
LS500h_OM_(U)_1809517Alphabetical Index
Pop Up Hood................................................... 38
Power control unit.......................................... 66
Power control unit coolant Capacity ...........................................................461
Checking ....................................................... 387
Preparing and checking before winter.........................................................................309
Power easy access system ........................ 142
Power outlets ................................................ 355
Power rear seat ............................................. 138
Power steering (Elect ric power steering
system).......................................................... 302 Warning light ............................................... 427
Power switch ...................................................170 Auto power off function ........................... 173
Changing the power switch modes .. 172
Power switch (engine switch) If your vehicle has to be stopped in an
emergency ..................................................416
Power trunk opener and closer ............... 118
Power windows Door lock linked window operation. 155
Jam protection function............................154
Operation........................................................154
Window lock switch ................................. 156
Pre-Collision System (PCS) Function ................................................ 212, 223
PCS OFF switch .............................. 215, 225
Warning light ...............................................430
R
Radar cruise control (dynamic radar cruise control with full-speed range)..245, 255
Radiator ...........................................................388
RCD (Rear camera detection) .............. 263 Warning message..................................... 276
RCD (Rear Camera Detection) Function .......................................................... 275
RCTA Function ............................................................ 271
Warning message......................................272
RCTA (Rear Cross Traffic Alert) ......... 263 RCTA function ..............................................272
Rear automatic air conditioning system
.......................................................................... 334
Rear Cross Traffic Alert (RCTA) ........... 271
Rear door sunshades ................................. 357
Rear Multi Operation Panel .................... 318
Rear seat position memory .......................146
Rear seats ........................................................ 138 Adjustment ..................................................... 138
Head restraints..............................................147
Rear seat position memory.................... 146
Relaxation system ......................................... 141
Seat heaters .................................................. 337
Seat ventilators ............................................ 337
Rear side marker lights Light switch .................................................... 187
Replacing light bulbs ..................................414
Rear sunshades ............................................358
Rear turn signal lights Replacing light bulbs ..................................414
Turn signal lever .......................................... 182
Rear view mirror Inside rear view mirror ............................... 151
Outside rear view mirrors...................... 152
Rear window defogger ............................. 324
Refueling Capacity ........................................................ 459
Fuel types ...................................................... 459
If the fuel filler do or cannot be opened
.......................................................................... 442
Opening the fuel tank cap ......................197
Regenerative braking ................................... 64
Remote Touch ................................................314
Replacing Electronic key battery ............................. 409
Fuses.................................................................... 411
Light bulbs .......................................................414
Tires ................................................................... 401
Resetting the message indicating mainte- nance is required ...................................... 375
Rev indicator .................................................... 87
Rev peak............................................................. 87