2014 Lexus GX460 tire size

GX 460 _O M_ OM6 0K 80 U_ (U)
4676-3. Do-it-yourself maintenance
6
Maintenance and care
■Tire types
●Summer tires
Summer tires are high-speed performance tires best suited to highway driving under
dry conditions. Since summer tires do not have the same traction performance as
snow tires, summer tires are inadequate for driving on snow-covered or icy roads. For
driving on snow-covered roads or icy roads, the use of snow tires is recommended.
When installing snow tires, be sure to replace all four tires.
●All season tires
All season tires are designed to provide better traction in snow and to be adequate for
driving in most winter conditions as well as for use year-round. All season tires, how-
ever, do not have adequate traction performance compared with snow tires in heavy
or loose snow. Also, all season tires fall short in acceleration and handling perfor-
mance compared with summer tires in highway driving.
●Snow tires
For driving on snow-covered roads or icy roads, we recommend using snow tires. If
you need snow tires, select tires of the same size, construction and load capacity as the
originally installed tires. Since your vehicle has radial tires as original equipment, make
sure your snow tires also have radial cons truction. Do not install studded tires without
first checking local regulations for possible restrictions. Snow tires should be installed
on all wheels. ( →P. 3 6 6 )
GX460_OM_OM60K80U_(U).book Page 467 Wednesday, July 3, 2013 11:40 AM

468
GX 460 _O M_ OM6 0K 80 U_ (U)6-3. Do-it-yourself maintenance
■If the tread on snow tires wears down below 0.16 in. (4 mm)
The effectiveness of the tires as snow tires is lost.
■Situations in which the tire pressure warning system may not operate properly
●In the following cases, the tire pressure warning system may not operate properly.
• If non-genuine Lexus wheels are used.
• A tire has been replaced with a tire that is not an OE (Original Equipment) tire.
• A tire has been replaced with a tire that is not of the specified size.
• Tire chains etc. are equipped.
• Lock nuts are equipped.
• An auxiliary-supported run-flat tire is equipped.
• If a window tint that affects the radio wave signals is installed.
• If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheel
housings.
• If the tire inflation pressure is extremely higher than the specified level.
• If the spare tire is in a location subject to poor radio wave signal reception.
• If a large metallic object which can interf ere with signal reception is put near the
spare tire.
• If tires not equipped with the tire pressure warning valves and transmitters are used.
• If the ID code on the tire pressure warning valves and transmitters is not registered in the tire pressure warning computer.
●Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display, air-port or other facility that generates st rong radio waves or electrical noise
• When carrying a portable radio, cellular phone, cordless phone or other wireless communication device
●When the vehicle is parked, the time taken for the warning to start or go off could be
extended.
●When tire inflation pressure declines rapidly for example when a tire has burst, the
warning may not function.
GX460_OM_OM60K80U_(U).book Page 468 Wednesday, July 3, 2013 11:40 AM

GX 460 _O M_ OM6 0K 80 U_ (U)
4696-3. Do-it-yourself maintenance
6
Maintenance and care
■Certification for tire pressure warning system
XFor vehicles sold in the U.S.A., Hawaii, Guam, Saipan and Puerto Rico
FCC ID: PAXPMV107J
FCC ID: HYQ13BCX
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to the follow-
ing two conditions: (1) This device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause
undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for compli-
ance could void the user’s authority to operate the equipment.
XFor vehicles sold in Canada
NOTE:
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interference
that may cause undesired operation of the device.
CAUTION
■Tire pressure warning system operation
The tire pressure warning system may not provide warning immediately if a tire bursts
or if sudden air leakage occurs.
■When inspecting or replacing tires
Observe the following precautions to prevent accidents. Failure to do so may cause
damage to parts of the drive train as well as dangerous handling characteristics, which
may lead to an accident resulting in death or serious injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Lexus.
●Do not mix differently constructed tires (radial, bias-belted or bias-ply tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.
GX460_OM_OM60K80U_(U).book Page 469 Wednesday, July 3, 2013 11:40 AM

471
GX 460 _O M_ OM6 0K 80 U_ (U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Tire inflation pressure
The recommended cold tire inflation
pressure and tire size are displayed on
the tire and loading information label.
(
→ P. 5 6 2 )
Tire inflation pressure
GX460_OM_OM60K80U_(U).book Page 471 Wednesday, July 3, 2013 11:40 AM

475
GX 460 _O M_ OM6 0K 80 U_ (U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Wheels
When replacing wheels, care should be taken to ensure that they are equivalent
to those removed in load capacity, 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 straightened
●Use only Lexus wheel nuts and wrenches designed for use with your alumi-
num wheels.
●When rotating, repairing or changing your tires, check that the wheel nuts are
still tight after driving 1000 miles (1600 km).
●Be careful not to damage the aluminum wheels when using tire chains.
●Use only Lexus genuine balance weights or equivalent and a plastic or rubber
hammer when balancing your wheels.
■When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and transmit-
ters 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 pressure warning
valves and transmitters must be installed. ( →P. 4 6 5 )
If a wheel is bent, cracked or heavily corroded, it should be replaced.
Otherwise, the tire may separate from the wheel or cause loss of handling
control.
Wheel selection
Aluminum wheel precautions
GX460_OM_OM60K80U_(U).book Page 475 Wednesday, July 3, 2013 11:40 AM

5137-2. Steps to take in an emergency
GX 460 _O M_ OM6 0K 80 U_ (U)
7
When trouble arises
CAUTION
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold and
inflated to the inflation pressure recommended 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 has 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 yo ur tires as soon as possible, and inflate
them to the proper pressure. Driving on a significantly 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 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 illumination of the TPMS low
tire pressure telltale (tire 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 indicator 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 minu te and then remain continuously illumi-
nated. This sequence will continue upon su bsequent 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 functioning properly. Always
check the TPMS (tire pressure warning syst em) 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
■Precaution when installing a different tire
When differently constructed tires or tires of different makers, models or tread pat-
terns are installed, the tire pressure warning system may not operate properly.
GX460_OM_OM60K80U_(U).book Page 513 Wednesday, July 3, 2013 11:40 AM

562
GX 460 _O M_ OM6 0K 80 U_ (U)8-1. Specifications
Steering
Free playLess than 1.18 in. (30 mm)
Power steering fluid typeAutomatic transmission fluid DEXRON® II or III
Tires and wheels
Ti r e s i z eP265/60R18 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 torque83 ft•lbf (112 N•m, 11.4 kgf•m)
GX460_OM_OM60K80U_(U).book Page 562 Wednesday, July 3, 2013 11:40 AM

GX 460 _O M_ OM6 0K 80 U_ (U)
5698-1. 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
Ti re si ze
1
2
3
4
5
6
7
1
2
3
sec_08-01.fm Page 569 Wednesday, July 10, 2013 10:28 AM