2018 LEXUS LS500 Owners Manual

4558-1. Specifications
LS500_OM_OM50F54U_(U) 8
Vehicle specifications 
20-inch tires (type A)

20-inch tires (type B) Wheel size 19 × 8J
Wheel nut torque 103 ft•lbf (140 N•m, 14.3 kgf•m)
Tire size 245/45RF20 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 size 20 × 8 1/2J
Wheel nut torque 103 ft•lbf (140 N•m, 14.3 kgf•m)
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)

456 8-1. Specifications
LS500_OM_OM50F54U_(U) 
20-inch tires (type C)

20-inch tires (type D) 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)
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)

4578-1. Specifications
LS500_OM_OM50F54U_(U) 8
Vehicle specifications ■
Gasoline quality
In very few cases, driveability problems may
be caused by the brand of gasoline you are
using. If driveability problems persist, try
changing the brand of gasoline. If this does
not correct the problem, consult your Lexus
dealer. ■
Gasoline quality standards●
Automotive manufacturers in the U.S.A.,
Europe and Japan have developed a
specification for fuel quality called the
World-Wide Fuel Charter (WWFC),
which is expected to be applied world-
wide.●
The WWFC improves air quality by low-
ering emissions in vehicle fleets, and
improves customer satisfaction through
better performance.
■
Recommendation of the use of gasoline
containing detergent additives
●
Lexus recommends the use of gasoline
that contains detergent additives to avoid
the build-up of engine deposits.
●
All gasoline sold in the U.S.A. contains
minimum detergent additives to clean
and/or keep clean intake systems, per EPA’s lowest additives concentration pro-
gram. ●
Lexus strongly recommends the use of
Top Tier Detergent Gasoline. For more
information on Top Tier Detergent Gaso-
line and a list of marketers, please go to
the official website www.toptiergas.com. ■
Recommendation of the use of low
emissions gasoline
Gasolines containing oxygenates such as
ethers and ethanol, as well as reformulated
gasolines, are available in some cities.
These fuels are typically acceptable for use,
providing they meet other fuel require-
ments.
Lexus recommends these fuels, since the
formulations allow for reduced vehicle
emissions. ■
Non-recommendation of the use of
blended gasoline ●
Use only gasoline containing up to 15%
ethanol.
DO NOT use any flex-fuel or gasoline
that could contain more than 15% etha-
nol, including from any pump labeled
E30 (30% ethanol [ ]), E50 (50%
ethanol [ ]), E85 (85% ethanol [ ])
(which are only some examples of fuel
containing more than 15% ethanol).
●
If you use gasohol in your vehicle, be sure
that it has an octane rating no lower than
91.
●
Lexus does not recommend the use of
gasoline containing methanol.
■
Non-recommendation of the use of gas-
oline containing MMT
Some gasoline contains an octane enhanc-
ing additive called MMT (Methylcyclopen-
tadienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gas-Fuel information You must only use unleaded gaso-
line.
Select premium unleaded gasoline
with an octane rating of 91
(Research Octane Number 96) or
higher required for optimum
engine performance and fuel econ-
omy.
If the octane rating is less than 91,
damage to the engine may occur
and may void the vehicle warranty.
At minimum, the gasoline you use
should meet the specifications of
ASTM D4814 in the U.S.A.
A
B C

458 8-1. Specifications
LS500_OM_OM50F54U_(U) oline that contains MMT. If fuel containing
MMT is used, your emission control system
may be adversely affected.
The malfunction indicator lamp on the
instrument cluster may come on. If this hap-
pens, contact your Lexus dealer for service. ■
If your engine knocks●
Consult your Lexus dealer.●
You may occasionally notice light knock-
ing for a short time while accelerating or
driving uphill. This is normal and there is
no need for concern.
NOTICE■
Notice on fuel quality●
Do not use improper fuels. If improper
fuels are used, the engine will be dam-
aged.●
Do not use leaded gasoline.
Leaded gasoline can cause damage to
your vehicle’s three-way catalytic con-
verters causing the emission control
system to malfunction.●
Do not use gasohol other than the type
previously stated.
Other gasohol may cause fuel system
damage or vehicle performance prob-
lems.
●
Using unleaded gasoline with an
octane number or rating lower than
the level previously stated may cause
persistent he avy knocking.
At worst, this may lead to engine dam-
age and will void the vehicle warranty.
■
When refueling with gasohol
Take care not to spill gasohol. It can dam-
age your vehicle’s paint.
■
Fuel-related poor driveability
If poor driveability is encountered after
using a different type of fuel (poor hot
starting, vaporization, engine knocking,
etc.), discontinue the use of that type of
fuel.

4598-1. Specifications
LS500_OM_OM50F54U_(U) 8
Vehicle specifications
Tire size ( → P.460)
Run-flat tire (RFT) or standard tire ( → P.432)This vehicle can be equipped with either run-flat tires (RFT) or standard tires. A
mark is molded on the side wall of the run-flat tire.
DOT and Tire Identification Number (TIN) ( → P.460)
Location of treadwear indicators ( → P.386)
Tire ply composition and materialsPlies are layers of rubber-coa ted parallel cords. Cords are the strands which form the plies
in a tire.
Radial tires or bias-ply tiresA radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is a bias-ply tire.
TUBELESS or TUBE TYPEA 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.387)
Maximum cold tire inflation pressure ( → P.454)This means the pressure to which a tire may be inflated.
Uniform tire quality gradingFor details, see “Uniform Tire Quality Grading” that follows.
Summer tires or all season tires ( → P.387)Tire information
Typical tire symbols
A
B
C
D
E
F
G
H
I
J
K

460 8-1. Specifications
LS500_OM_OM50F54U_(U) 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

4618-1. Specifications
LS500_OM_OM50F54U_(U) 8
Vehicle specifications 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

462 8-1. Specifications
LS500_OM_OM50F54U_(U) ■
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 automatic trans-
mission, 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)