2022 LEXUS RX450h wheel size

4197-2. Steps to take in an emergency
7
When trouble arises
WARNING
■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], you 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 warning 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 maintena nce, 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.

4588-1. Specifications
*: Minimum pedal clearance when depressed with a force of 110 lbf (490 N, 50 kgf) while
the hybrid system is operating.
Type A
Brake pad wear limit0.04 in. (1.0 mm)
Fluid typeFMVSS 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 size235/65R18 106V, T165/9 0D18 107M (spare)
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front tire
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Rear tire
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Spare tire
60 psi (420 kPa, 4.2 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 5 psi (30 kPa, 0.3 kgf/cm
2 or bar) to the front and rear
tires. Never exceed the maximum cold tire inflation pres-
sure indicated on the tire sidewall.
Wheel size18  8J, 18  4T (spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

4598-1. Specifications
8
Vehicle specifications
Type B
Tire size235/55R20 102V, T165/90D18 107M (spare)
Tire inflation pressure
(Recommended cold tire
inflation pressure)
RX450h:
Front tire
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Rear tire
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Spare tire
60 psi (420 kPa, 4.2 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 11 psi (70 kPa, 0.7 kgf/cm
2 or bar) to the front and rear
tires. Never exceed the maximum cold tire inflation pres-
sure indicated on the tire sidewall.
RX450hL:
Front tire
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Rear tire
35 psi (240 kPa, 2.4 kgf/cm
2 or bar)
Spare tire
60 psi (420 kPa, 4.2 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 (62 kPa, 0.6 kgf/cm
2 or bar) to the front and rear
tires. Never exceed the maximum cold tire inflation pres-
sure indicated on the tire sidewall.
Wheel size20  8J, 18  4T (spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

4658-1. Specifications
8
Vehicle specifications
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
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.
Tire size
A
B
C
D
E
F
G
A
Tire section names
Uniform Tire Quality Grading
B
C
A
B
C
D
E
F
G
H
I
J
K

4688-1. Specifications
RimA 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 designationRim diameter and width
Rim type designationThe industry manufacturer’s designation for a rim
by style or code
Rim widthNominal 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 two
Vehicle normal load on the tire
The load on an individual ti re that is determined by
distributing to each axle its share of curb weight,
accessory weight, and normal occupant weight
(distributed in accordance with Table 1
* below), and
dividing by two
Weather sideThe 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 separationA breakdown of the bond between components in
the bead
Bias ply tire
A pneumatic tire in which the ply cords that extend
to the beads are laid at alternate angles substan-
tially less than 90 degrees to the centerline of the
tread
CarcassThe tire structure, except tread and sidewall rubber
which, when inflated, bears the load
ChunkingThe breaking away of pieces of the tread or sidewall
CordThe strands forming the plies in the tire
Cord separationThe parting of cords from adjacent rubber com-
pounds
Tire related termMeaning

515Alphabetical Index
Stop lightsReplacing light bulbs................................ 393
Storage features ........................................... 318
Stuck If the vehicle becomes stuck................ 449
Suggestion function....................................... 93
Sun visors ........................................................ 339
Sunshade Panoramic moon roof.............................. 156
Roof ....................................................................154
Switches Automatic High Beam switch ...............201
Brake Hold switch ......................................196
Door lock switches ........................................ 111
Driving mode select switch .................. 276
Driving position memory switches .... 140
Dynamic radar cruise control with full-speed range switch ....................... 236
Electronic sunshade switch ................... 156
Emergency flashers switch ................... 402
EV drive mode switch ..............................187
Fog light switch ........................................... 204
Garage door opener switches ............ 341
Heated steering wheel switch............... 312
HUD (Head-up display) switch............ 96
Ignition switch................................................182
Instrument panel light control switches ............................................................................ 87
Intuitive parking assist switch............... 253
Light switches ............................................... 198
LTA (Lane Tracing As sist) switch..... 229
Meter control switches .............................. 89
Moon roof switches ...................................153
“ODO TRIP” switch .................................... 87
Outside rear view mi rror switches .... 148
Paddle shift switches .........................190, 191
Panoramic moon roof switches .......... 156
Parking brake switch .................................193
PCS OFF switch ........................................ 220
PKSB (Parking Support Brake) switch ......................................................................... 266
Power switch .................................................182 Power window switches ........................... 151
RCTA switch ............................................... 260
Rear window and outside rear view mir-
ror defoggers switch ........................... 298
Seat heater switches...................................312
Seat ventilator switches ............................312
“SOS” button...................................................60
Tilt and telescopic steering control switch ........................................................................... 146
Tire pressure warning reset switch...378
Vehicle-to-vehicle di stance switch... 236
VSC OFF switch ...................................... 280
Window lock switch.................................. 153
Windshield wiper and washer switch ..........................................................................204
Windshield wiper de-icer switch...... 303
T
Tachometer....................................................... 83 Rev indicator ...................................................85
Rev peak............................................................85
Tail lights Light switch .................................................... 198
Replacing light bulbs................................393
The Secondary Collision Brake ............ 279
Theft deterrent system Alarm................................................................... 74
Immobilizer system ...................................... 73
Tire inflation pressure Maintenance data ..................................... 458
Tire inflation pressure display function.......................................................................... 376
Warning light .................................................414
Tire information ............................................ 463 Glossary ......................................................... 467
Size ................................................................... 465
Tire identification number......................464
Uniform Tire Quality Grading ........... 465
Tire pressure display .................................. 376
Tire pressure warning system Function .......................................................... 376
Initializing........................................................378

516Alphabetical Index
Installing tire pressure warning valves and transmitters .......................................377
Registering ID codes ............................... 379
Warning light ................................................. 414
Tires Chains ............................................................. 287
Checking ....................................................... 374
If you have a flat tire .................................. 424
Inflation pressure....................................... 380
Information .................................................... 463
Replacing ....................................................... 424
Rotating tires ................................................ 376
Size....................................................................458
Snow tires ......................................................286
Spare tire........................................................ 424
Tire inflation pressure display function......................................................................... 376
Tire pressure warning system ............. 376
Warning light ................................................. 414
Tools.................................................................. 425
Top tether strap................................................57
Total load capacity ...................................... 452
Towing Dinghy towing ................................................ 181
Emergency towing ...................................405
Towing eyelet .............................................. 407
Trailer towing ...................................................171
TRAC (Traction Control) ........................ 279
Traction battery (hybrid battery) Hybrid battery (traction battery) air vents.............................................................................. 71
Location............................................................. 69
Specification ................................................. 454
Warning message......................................... 72
Traction Control (TRAC) ........................ 279
Traction motor (electric motor) ............... 66
Trailer Sway Control.................................. 279
Trailer towing ................................................... 171
Transmission Driving mode select switch .................. 276
Hybrid transmission .................................. 189
M mode ............................................................. 191 Paddle shift switches ........................ 190, 191
Trip meters ........................................................ 87
Turn signal lights Replacing light bulbs................................393
Turn signal lever ...........................................192
Wattage ......................................................... 460
U
USB charging ports.................................... 329
V
Vanity lights.................................................... 340Wattage ......................................................... 460
Vanity mirrors ............................................... 340
VDIM (Vehicle Dynamics Integrated Man- agement)...................................................... 279
Vehicle data recording ....................................7
Vehicle Dynamics Integrated Manage- ment (VDIM).............................................. 279
Vehicle identification number ................ 452
Vehicle Stability Control (VSC) ........... 278
Ventilators (seat ventilators).....................312
VSC (Vehicle Stability Control) ........... 278
W
Warning buzzers
Approach warning.................................... 242
Brake Override System ...........................412
Door lock .......................................................... 110
Downshifting ................................................... 191
Drive-Start Control.....................................412
Electric power steering.............................413
Hands off steering wheel warning (LTA).......................................................................... 232
High coolant temperature...................... 410
Hybrid system overheat ............................ 411
Intuitive parking assist ................... 258, 415
Low engine oil pressure ............................ 411
LTA (Lane Tracing Assist)225, 228, 414
Open door ....................................................... 112

517Alphabetical Index
Open window ............................................... 152
PKSA (Parking Support Alert) ...........250
PKSB (Parking Support Brake) ...........415
Pre-collision braking.................................. 219
RCTA (Rear Cross Traffic Alert) ........415
Seat belt ................................................. 413, 414
Warning label .................................................. 69
Warning lights................................................ 410 ABS .................................................................... 412
Brake hold operated indicator ............. 417
Brake Override System ........................... 412
Brake system ................................................ 410
Charging system ...........................................411
Drive-Start Control .................................... 412
Electric power steering ............................413
High coolant temperature ..................... 410
Hybrid system overheat warning light411
Intuitive parking assist OFF indicator 415
Low engine oil pressure.............................411
Low fuel level .................................................413
LTA indicator ................................................. 414
Malfunction indicator lamp.......................411
Master warning light .................................. 417
Parking brake indicator ............................416
PKSB OFF indicator ..................................415
Pre-collision system ...................................416
RCTA OFF indicator.................................415
Seat belt reminder light ................. 413, 414
Slip indicator ..................................................416
SRS...................................................................... 412
Tire pressure .................................................. 414
Warning messages ..................................... 420
Washer Adding ............................................................ 369
Preparing and checking before winter.........................................................................286
Switch .............................................................. 204
Washing and waxing..................................350
Weight Cargo capacity.................................. 167, 170
Load limits .......................................................170
Weight ............................................................ 452 Wheels ............................................................. 382
Size ................................................................... 458
Window lock switch .....................................153
Windows Power windows ............................................. 151
Rear window defogger.......................... 300
Washer ...........................................................204
Windshield wiper de-icer ........................ 305
Windshield wiper inserts ..........................385
Windshield wipers Position........................................................... 206
Rain-sensing windshield wipers .........204
Replacing a windshield wiper insert 385
Winter driving tips....................................... 286
Wireless charger ......................................... 330
Wireless remote control Battery-Saving Function...........................126
Locking/Unlocking ................................... 107
Replacing the battery .............................. 386
For information regarding the equipment listed below, refer to
the “NAVIGATION AND MULTI-
MEDIA SYSTEM OWNER’S
MANUAL”.
· Navigation system
· Audio/visual system
· Panoramic view monitor
· Lexus parking assist monitor