Lexus NX350h (2022 year). Manual in english — page 44

Tire inflation pressure (Recommended cold
tire inflation pressure)

Front: 33 psi (230 kPa, 2.3 kgf/cm

2

or bar)

Rear: 33 psi (230 kPa, 2.3 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 6 psi (40 kPa, 0.4 kgf/cm

2

or bar)

to the front and rear tires. Never exceed
the maximum cold tire inflation pressure
indicated on the tire sidewall.

Wheel size

20 × 7 1/2 J

Wheel bolt torque

103 ft•lbf (140 N•m, 14.3 kgf•m)

Light bulbs

Light bulbs

Bulb No.

W

Type

Exterior

Front turn signal
lights (bulb
type)

WY21W

21

A

A: Wedge base bulbs (amber)

10-1. Specifications

723

10

Vehicle specifications

Fuel information

You must only use unleaded gasoline in your vehicle.
Recommended to use premium unleaded gasoline with octane rating of 91 (Re-
search OctaneNumber of 96) or higher for optimum engine performance. You
may use unleaded gasoline with octane rating as low as 87 (Research Octane
Number of 91). In this case, engine performance may be decreased.
Use of octane rating unleaded gasoline with an octane rating lower than 87 may
result in engine knocking. Persistent knocking can lead to engine damage.
At minimum, the gasoline you use should meet the specifications of ASTM D4814
in the U.S.A.

INFORMATION

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.

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 program.

Lexus strongly recommends the use of Top Tier Detergent Gasoline. For more infor-
mation on Top Tier Detergent Gasoline 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 requirements.
Lexus recommends these fuels, since the formulations allow for reduced vehicle emis-
sions.

10-1. Specifications

724

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% ethanol, 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 87.

Lexus does not recommend the use of gasoline containing methanol.

Non-recommendation of the use of gasoline containing MMT

Some gasoline contains an octane enhancing additive called MMT (Methylcyclopenta-
dienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gasoline 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 happens,
contact your Lexus dealer for service.

If your engine knocks

Consult your Lexus dealer.

You may occasionally notice light knocking 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 damaged.

Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle's three-way catalytic converters
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 problems.

Using unleaded gasoline with an octane number or rating lower than the level previ-
ously stated will cause persistent heavy knocking.
At worst, this will lead to engine damage.

Fuel-related poor driveability

If poor driveability (poor hot starting, vaporization, engine knocking, etc.) is encountered
after using a different type of fuel, discontinue the use of that type of fuel.

10-1. Specifications

725

10

Vehicle specifications

NOTICE

When refueling with gasohol

Take care not to spill gasohol. It can damage your vehicle's paint.

10-1. Specifications

726

Tire information

Typical tire symbols

A

Tire size

B

DOT and Tire Identification Number (TIN)

C

Location of treadwear indicators

D

Tire ply composition and materials

Plies are layers of rubber-coated parallel cords. Cords are the strands which form the
plies in a tire.

E

Radial tires or bias-ply tires

A radial tire has [RADIAL] on the sidewall. A tire not marked [RADIAL] is a bias-ply
tire.

F

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.

G

Load limit at maximum cold tire inflation pressure

H

Maximum cold tire inflation pressure

This means the pressure to which a tire may be inflated.

I

Uniform tire quality grading

For details, see

Uniform Tire Quality Grading(

P.729)

that follows.

J

Summer tires or all season tires

An all season tire has [M+S] on the sidewall. A tire not marked [M+S] is a summer tire.

10-1. Specifications

727

10

Vehicle specifications

Typical DOT and Tire Identification Number (TIN)

Type A

A

DOT symbol

*1

B

Tire Identification Number (TIN)

C

Tire manufacturer's identification mark

D

Tire size code

E

Manufacturer's optional tire type code (3 or
4 letters)

F

Manufacturing week

G

Manufacturing year

Type B

A

DOT symbol

*1

B

Tire Identification Number (TIN)

C

Tire manufacturer's identification mark

D

Manufacturer's code

E

Manufacturing week

F

Manufacturing year

Tire size

Typical tire size information

The illustration indicates typical tire size.

A

Tire use
(P = Passenger car, T = Temporary use)

B

Section width (millimeters)

C

Aspect ratio (tire height to section width)

D

Tire construction code
(R = Radial, D = Diagonal)

E

Wheel diameter (inches)

F

Load index (2 digits or 3 digits)

G

Speed symbol (alphabet with one letter)

*1 :

The DOT symbol certifies that the tire conforms to applicable Federal Motor Vehicle

Safety Standards.

10-1. Specifications

728

Tire dimensions

A

Section width

B

Tire height

C

Wheel diameter

Tire section names

A

Bead

B

Sidewall

C

Shoulder

D

Tread

E

Belt

F

Inner liner

G

Reinforcing rubber

H

Carcass

I

Rim lines

J

Bead wires

K

Chafer

Uniform Tire Quality Grading

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 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
information.

DOT quality grades

All passenger vehicle tires must conform to Federal Safety Requirements in addi-
tion 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

10-1. Specifications

729

10

Vehicle specifications

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,
however, and may depart 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 represent
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.

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 for this tire are established for a tire that 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.

10-1. Specifications

730

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
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 capaci-
ty of fuel, oil and coolant, and if so equip-
ped, 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 occu-
pants specified in the second column of
Table 1

(1)

that follows

Occupant distribution

Distribution of occupants in a vehicle as
specified in the third column of Table 1

(1)

below

10-1. Specifications

731

10

Vehicle specifications

Tire related term

Meaning

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 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 assembly 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 capaci-
ty)

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 deter-
mined by distributing 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 deter-
mined by distributing to each axle its share
of curb weight, accessory weight, and nor-
mal occupant weight (distributed in accord-
ance with Table 1

(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 compo-
nents in the bead

10-1. Specifications

732

Tire related term

Meaning

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 ma-
terial

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 ma-
terial in the carcass

10-1. Specifications

733

10

Vehicle specifications

Tire related term

Meaning

Intended outboard sidewall

(a) The sidewall that contains a whitewall,
bears white lettering, or bears manufactur-
er, 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 asym-
metrical tire that has a particular side that
must always face outward 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 inflation 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, side-
wall, or innerliner that extends to cord ma-
terial

Outer diameter

The overall diameter of an inflated new tire

Overall width

The linear distance between the exteriors
of the sidewalls of an inflated tire, including
elevations due to labeling, 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 rat-
ing (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

10-1. Specifications

734

Tire related term

Meaning

Pneumatic tire

A mechanical device made of rubber,
chemicals, fabric and steel or other materi-
als, 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 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 Reference Test Tire,
when using the snow traction test as descri-
bed in ASTM F-1805-00, Standard Test
Method for Single Wheel Driving Traction
in a Straight Line 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 con-
tact with the road

Tread rib

A tread section running circumferentially
around a tire

10-1. Specifications

735

10

Vehicle specifications

Tire related term

Meaning

Tread separation

Pulling away of the tread from the tire car-
cass

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

(1)

Table 1—Occupant loading and distribution for vehicle normal load for various desig-

nated seating capacities

Designated seating capaci-
ty, 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

10-1. Specifications

736

Customizable features

User customization function outline

Your vehicle includes a variety of electronic features that can be personalized to
suit your preferences. The settings of these features can be changed using the
center display or at your Lexus dealer.

WARNING

As the hybrid system needs to be operating during customization, ensure that the vehicle
is parked in a place with adequate ventilation. In a closed area such as a garage, exhaust
gases including harmful carbon monoxide (CO) may collect and enter the vehicle.
Possibly may leading to death or a serious health hazard.

NOTICE

While performing customization, make sure that the hybrid system is operating, in order
to prevent the 12-volt battery from becoming discharged.

10-2. Customizable features

737

10

Vehicle specifications

Method to change settings

Changing using the center display

Stop the vehicle in a place where operations can be performed safely, engage the
parking brake, and change the shift position to P.

1

Select

on the center display.

2

Select [Vehicle customize] or [Driving assist].

3

Select the item to change the settings of from the list.

Various setting can be changed. Refer to the list of settings that can be changed for
details.

For functions that can be turned on/off, select

(ON)/

(OFF).

10-2. Customizable features

738

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Политика конфиденциальности