2021 Lexus GX460 tire size

5257-2. Steps to take in an emergency
GX460_OM_OM60T19U_(U)
7
When trouble arises
WARNING
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold and
inflated to the inflation pressure recomm ended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure label (tire and load information label). (If your
vehicle has tires of a different size than the size indicated on the vehicle placard or tire
inflation pressure label [tire and load in formation label], you should determine the
proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle ha s been equipped with a tire pressure moni-
toring system (TPMS-tire pressure warning system) that illuminates a low tire pressure
telltale (tire pressure warning light) when on e or more of your tires is significantly
under-inflated. Accordingly, when the low ti re 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 si gnificantly under-inflated tire causes the
tire to overheat and can lead to tire failure . Under-inflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure wa rning system) is not a substitute for proper
tire maintenance, and it is th e driver’s responsibility to ma intain correct tire pressure,
even if under-inflation has not reached the le vel to trigger illumination of the TPMS low
tire pressure telltale (tir e pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system) mal-
function indicator to indicate when the system is not operating properly. The TPMS
(tire pressure warning system) malfunction indi cator is combined with the low tire pres-
sure telltale (tire pressure warning light). When the system detects a malfunction, the
telltale will flash for approximately one mi nute and then remain continuously illumi-
nated. This sequence will cont inue upon subsequent vehicle start-ups as long as the
malfunction exists. When the malfunction in dicator is illuminated, the system may not
be able to detect or signal low tire pressure as intended.
TPMS (tire pressure warning system) malfun ctions 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 functioning 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 pressu re warning system) to continue to function
properly.

568
GX460_OM_OM60T19U_(U)8-1. Specifications
18-inch tires
19-inch tires
Steering
Free playLess than 1.2 in. (30 mm)
Power steering fluid typeAutomatic transmission fluid DEXRON® II or III
Tires and wheels
Tire sizeP265/60R18 109H
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front tire
32 psi (220 kPa, 2.2 kgf/cm2 or bar)
Rear tire
32 psi (220 kPa, 2.2 kgf/cm2 or bar)
Spare tire
32 psi (220 kPa, 2.2 kgf/cm2 or bar)
Wheel size18
 7 1/2J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Tire size265/55R19 109V
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front tire
32 psi (220 kPa, 2.2 kgf/cm2 or bar)
Rear tire
32 psi (220 kPa, 2.2 kgf/cm2 or bar)
Spare tire
32 psi (220 kPa, 2.2 kgf/cm2 or bar)
Wheel size19  7 1/2J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

573
GX460_OM_OM60T19U_(U)8-1. Specifications
8
Vehicle specifications
Tire information
Tire size
( P. 575)
DOT and Tire Identification Number (TIN) ( P. 574)
Location of trea dwear indicators ( P. 472)
Tire ply composition and materials
Plies are layers of rubber-c oated 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. 579)
Maximum cold tire inflation pressure ( P. 579)
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. 477)
An all season tire has “M+S” on the side wall. A tire not marked “M+S” is a summer
tire.
Typical tire symbols
1
2
3
4
5
6
7
8
9
10

574
GX460_OM_OM60T19U_(U)8-1. Specifications
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
Manufacturer’s code
*: The DOT symbol certifies that the tire co
nforms to applicable Federal Motor Vehicle
Safety Standards.
Typical DOT and Tire Identification Number (TIN)
Type AType B
1
2
3
4
5
6
7
8

GX460_OM_OM60T19U_(U)
5758-1. Specifications
8
Vehicle specifications
■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 dimensions
Section width
Tire height
Wheel diameter
Tire size
1
2
3
4
5
6
7
1
2
3

580
GX460_OM_OM60T19U_(U)8-1. Specifications
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 desi gnated seating capacity
Vehicle maximum load on
the tireThe load on an individual tire that is determined by dis-
tributing 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 determined by dis-
tributing to each axle its sh are 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
BeadThe 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 tireA pneumatic tire in which the ply cords that extend to
the beads are laid at altern ate angles substantially 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 th e plies in the tire
Cord separationThe parting of cords from adjacent rubber compounds
CrackingAny parting within the tread, sidewall, or innerliner of
the tire extending to cord material
Tire related termMeaning

593
GX460_OM_OM60T19U_(U)8-3. Items to initialize
8
Vehicle specifications
Items to initialize
*1: U.S.A. only
*2: If equipped
The following item must be initialize
d for normal system operation after such
cases as the battery being reconnected , or maintenance being performed on
the vehicle:
ItemWhen to initializeReference
Message indicating mainte-
nance is required
*1After the maintenance is per-
formedP. 449
Oil maintenanceP. 462
Tire pressure warning system
• When rotating the tires
• When the tire inflation pressure is changed by changing tire size.
(When there are multiple speci-
fied pressures)
• After registering the ID codes
P. 474
Power windowWhen functioning abnormallyP. 161
Moon roofP. 164
Multi-terrain Monitor*2After reconnecting or changing the
batteryP. 337

624Alphabetical index
GX460_OM_OM60T19U_(U)
Size ........................................................... 568
Snow tires .............................................. 374
Spare tire ................................................. 531
Tire pressure warning system .................................................. 473
Tools........................................................... 532
Towing Dinghy towing ...................................... 199
Emergency towing............................. 512
Towing hooks ....................................... 513
Trailer Sway Control ....................... 356
Trailer towing .......................................... 181
Trailer Sway Control........................... 356
TRAC (Traction Control) ................. 355
Transmission Automatic transmission ................. 206
AVS switch ...........................................343
If the shift lever cannot be shifted from P .................................. 209
Trip meters ................................................. 90
Turn signal lights ...................................... 211 Replacing light bulbs..............................501, 502, 505
Turn signal lever .................................... 211
Wattage ................................................. 569
USB port
*
Vanity lights Vanity lights ........................................... 419
Wattage ................................................. 569
Vanity mirrors ..........................................419
Vehicle identification number ...........561
VSC (Vehicle Stability Control) .... 355 Warning buzzers ...................................518
Brake system ........................................ 518
Downshifting ........................................ 209
Intuitive parking assist.......................273
LDA (Lane Departure Alert).......250
Open back door....................................114
Open door ...............................................114
Pre-collision warning....................... 239
Radar cruise control ........................ 265
Seat belt remainder ..........................520
Warning lights .........................................518 ABS ............................................................519
Brake Override System ................... 521
Brake system ........................................ 518
Charging system ................................ 518
Drive-Start Cont rol ............................ 521
High coolant temperature ............. 518
KDSS..........................................................519
Low engine oil pressure ................. 518
Low fuel level .......................................520
Malfunction indicator lamp............ 518
Open door ...........................................520
Parking brake indicator ....................519
PCS ............................................................519
Seat belt reminder light ..................520
Slip indicator ..........................................519
SRS............................................................. 518
Tire pressure warning light ...........520
Warning message.................................527
Warning reflector holder.................... 410
Washer ......................................................222 Checking ................................................. 471
Preparing and checking before winter .................................... 374
Switch .......................................................222
Washing and waxing ...........................442
U
V
W