2020 LEXUS NX300 wheel size

3536-3. Do-it-yourself maintenance
LEXUS NX300 Owners Manual_USA_M78389_en
6
Maintenance and care
When replacing wheels, care should
be taken to ensure that they are equiv-
alent to those removed in load capac-
ity, diameter, rim width and inset
*.
Replacement wheels are available at
your Lexus dealer.
*: Conventionally referred to as offset.
Lexus does not recommend using the
following:
 Wheels of different sizes or types
 Used wheels
 Bent wheels that have been straight-
ened
■When replacing wheels
The wheels of your vehicle are equipped
with tire pressure warning valves and trans-
mitters that allow the tire pressure warning
system to provide advance warning in the
event of a loss in tire inflation pressure.
Whenever wheels are replaced, tire pres-
sure warning valves and transmitters must
be installed. ( P.345, 354)
NOTICE
■When inspecting and adjusting tire
inflation pressure
Be sure to put the tire valve caps back on.
If a valve cap is not installed, dirt or mois-
ture may get into the valve and cause an
air leak, resulting in decreased tire infla-
tion pressure.
Wheels
If a wheel is bent, cracked or heavily
corroded, it should be replaced.
Otherwise, the tire may separate
from the wheel or cause a loss of
handling control.
Wheel selection
WARNING
■When replacing wheels
●Do not use wheels that are a different
size from those recommended in the
Owner’s Manual, as this may result in a
loss of handling control.

3837-2. Steps to take in an emergency
LEXUS NX300 Owners Manual_USA_M78389_en
7
When trouble arises
●Avoid abrupt maneuvering and brak-
ing. If the vehicle tires deteriorate, you
could lose control of the steering
wheel or the brakes.
■If a blowout or sudden air leakage
should occur
The tire pressure warning system may
not activate immediately.
■Maintenance of the tires
Each tire, including the spare (if pro-
vided), should be checked monthly when
cold and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire infla-
tion pressure label (tire and load
information label). (If your vehicle has
tires of a different size than the size indi-
cated on the vehicle placard or tire infla-
tion pressure label [tire and load
information label], yo u should determine
the proper tire infl ation pressure for
those tires.)
As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS-tire pressure
warning system) that illuminates a low
tire pressure telltale (tire pressure warn-
ing light) when one or more of your tires
is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale
(tire pressure warnin g light) illuminates,
you should stop and check your tires as
soon as possible, and inflate them to the
proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire
to overheat and can lead to tire failure.
Under-inflation also reduces fuel effi-
ciency and tire tread life, and may affect
the vehicle’s handling and stopping abil-
ity.
Please note that the TPMS (tire pressure
warning system) is not a substitute for
proper tire maintenance, and it is the
driver’s responsibility to maintain correct
tire pressure, even if under-inflation has
not reached the level to trigger illumina-
tion of the TPMS low tire pressure telltale
(tire pressure warning light).
Your vehicle has also been equipped with
a TPMS (tire pressure warning system)
malfunction indicator to indicate when
the system is not operating properly. The
TPMS (tire pressure warning system)
malfunction indicator is combined with
the low tire pressure telltale (tire pres-
sure warning light) . When the system
detects a malfunction, the telltale will
flash for approximately one minute and
then remain continuously illuminated.
This sequence will continue upon subse-
quent vehicle start-ups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may
not be able to detect or signal low tire
pressure as intended.
TPMS (tire pressure warning system)
malfunctions may occur for a variety of
reasons, including the installation of
replacement or alternate tires or wheels
on the vehicle that prevent the TPMS
(tire pressure warning system) from func-
tioning properly. Always check the
TPMS (tire pressure warning system)
malfunction telltale after replacing one
or more tires or wheels on your vehicle to
ensure that the replacement or alternate
tires and wheels allow the TPMS (tire
pressure warning system) to continue to
function properly.
NOTICE
■To ensure the tire pressure warning
system operates properly
Do not install tires with different specifi-
cations or makers, as the tire pressure
warning system may not operate prop-
erly.

4138-1. Specifications
LEXUS NX300 Owners Manual_USA_M78389_en
8
Vehicle specifications
*: Minimum pedal clearance when depressed with a force of 110 lbf (490 N, 50.0 kgf)
while the engine is running.
Type A
Brakes
Pedal clearance*3.94 in. (100 mm) Min.
Brake pad wear limit0.04 in. (1.0 mm)
Pedal free play0.04 — 0.24 in. (1.0 — 6.0 mm)
Fluid type• FMVSS No. 116 DOT 3 or SAE J1703
• FMVSS No. 116 DOT 4 or SAE J1704
Steering
Free playLess than 1.2 in. (30 mm)
Tires and wheels
Tire size225/65R17 102H
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 permit-
ted by law)
Add 1 psi (10 kPa, 0.1 kgf/cm
2 or bar) to the front
and rear tires. Never exceed the maximum cold tire
inflation pressure indica ted on the tire sidewall.
Wheel size17  7 J
Wheel nut torque76 ft• lbf (103 N• m, 10.5 kgf• m)

4148-1. Specifications
LEXUS NX300 Owners Manual_USA_M78389_en
Type B
Type C
Compact spare tire
Tire size225/60R18 100H
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Driving under normal conditions
Front
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Rear
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Driving at high speeds (above 100 mph [160
km/h]) (in countries where such speeds are permit-
ted by law)
Add 9 psi (60 kPa, 0.6 kgf/cm
2 or bar) to the front
and rear tires. Never exceed the maximum cold tire
inflation pressure indica ted on the tire sidewall.
Wheel size18  7 1/2 J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire size235/55R18 100V
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Driving under normal conditions
Front
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Rear
32 psi (220 kPa, 2.2 kgf/cm
2 or bar)
Driving at high speeds (above 100 mph [160
km/h]) (in countries where such speeds are permit-
ted by law)
Add 9 psi (60 kPa, 0.6 kgf/cm
2 or bar) to the front
and rear tires. Never exceed the maximum cold tire
inflation pressure indica ted on the tire sidewall.
Wheel size18  7 1/2 J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire sizeT165/80D17 104M
Spare tire inflation pressure
(Recommended cold tire inflation
pressure)
60 psi (420 kPa, 4.2 kgf/cm2 or bar)

4158-1. Specifications
LEXUS NX300 Owners Manual_USA_M78389_en
8
Vehicle specifications
A: Wedge base bulbs (clear)
B: Wedge base bulbs (amber)
*:If equipped
Wheel size17  4 T
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Light bulbs
Light bulbsBulb No.WType
Exterior
Front side marker lights (bulb
type)W5W5A
Front turn signal lights (bulb
type)
*585
(WY21W)21B
InteriorVanity lights8A

4208-1. Specifications
LEXUS NX300 Owners Manual_USA_M78389_en
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)
Wheel diameter (inches)
Load index (2 digits or 3 digits)
Speed symbol (alphabet with one
letter)
■Tire dimensionsSection width
Tire height
Wheel diameter
Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Tire size
D
E
F
A
B
C
D
E
F
G
Tire section names
A
B
C
A
B
C
D
E
F
G
H
I
J

4228-1. Specifications
LEXUS NX300 Owners Manual_USA_M78389_en
nation, can cause heat buildup and
possible tire failure.
Glossary of tire terminology
Tire related
termMeaning
Cold tire infla-
tion 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-
sureThe maximum cold inflated
pressure to which a tire
may be inflated, shown on
the sidewall of the tire
Recom-
mended infla-
tion pressureCold tire inflation pressure
recommended by a manu-
facturer
Accessory
weight
The combined weight (in
excess of thos e 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 equip-
ment (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 vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options
weight
Normal occu-
pant 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 regu lar 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 bat-
tery, 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 diam-
eter)Nominal diameter of the
bead seat
Rim size des-
ignationRim diameter and width
Tire related termMeaning

LEXUS NX300 Owners Manual_USA_M78389_en
Alphabetical Index467
Wheels ............................................................. 353
Replacing wheels.......................................353
Size......................................................................413
Window glasses ............................................ 138
Window lock switch .....................................139
Windows Power windows........................................... 138
Rear window defogger ..........................280
Washer ..................................................184, 189
Windshield wiper de-ice r ........................ 284
Windshield wipers Intermittent windshield wipers ............. 184
Rain-sensing windshield wipers.......... 186
Winter driving tips....................................... 266
Wireless charger .......................................... 301
Wireless remote control key ......................97 Battery-saving function ..............................117
Locking/Unlocking ..................................... 97
Panic mode...................................................... 98
Replacing the battery...............................356
For information regarding the equipment listed below, refer to
the “NAVIGATION AND MULTI-
MEDIA SYSTEM OWNER’S
MANUAL”.
· Audio/visual system
· Navigation system
· Lexus parking assist monitor
· Panoramic view monitor
· Lexus Enform