tire size LEXUS LX570 2015 User Guide

7804-3. Do-it-yourself maintenance
LX570_OM_OM60L96U_(U) ■
When replacing wheels
The wheels of your Lexus are equipped with tire pressure warning valves and trans-
mitters that allow the tire pressure warning system to provide advanced warning in
the event of a loss in tire inflation pressure. Whenever wheels are replaced, the tire
pressure warning valves and tran smitters must be installed. (  P. 767)
CAUTION■
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 loss of handling control.●
Never use an inner tube in a leaking wheel which is designed for a tubeless tire.
Doing so may result in an accident , causing death or serious injury.■
Use of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air during driving, possibly causing an acci-
dent.
NOTICE■
Replacing tire pressure warning valves and transmitters ●
Because tire repair or re placement may affect the tire pressure warning valves
and transmitters, make sure to have tires serviced by your Le xus dealer or other
qualified service shop. In addition, make sure to purchase your tire pressure
warning valves and transmitte rs at your Lexus dealer.●
Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valv es and transmitters may not work properly with non-
genuine wheels.

8365-2. Steps to take in an emergency
LX570_OM_OM60L96U_(U) 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 si ze than the size indi cated on the vehicle
placard or tire inflation pressure label [tire and load information label], you should
determine the proper tire inflati on pressure for those tires.)
As an added safety feature, your vehicl e has been equipped with a tire pressure
monitoring system (T PMS-tire pressure wa rning system) that illuminates a low tire
pressure telltale (tire pressure warning ligh t) when one or more of your tires is sig-
nificantly under-inflated. Acco rdingly, when the low tire pr essure telltale (tire pres-
sure warning light) illuminates, you shou ld stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat an d 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).

8956-1. Specifications
6
Vehicle specifications
LX570_OM_OM60L96U_(U) Suspension
Tires and wheels Fluid type Suspension fluid AHC
Tire size P285/50R20 111V
Tire inflation pressure
(Recommended cold tire inflation
pressure) Normal driving
Front:
33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Rear:
33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Spare:
33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Trailer towing
Add 2 psi (10 kPa, 0.1 kgf/cm 2
or bar) to the
rear tires.
Wheel size 20  8 1/2J
Wheel nut torque 97 ft•lbf (131 N•m, 13.4 kgf•m)

9016-1. Specifications
6
Vehicle specifications
LX570_OM_OM60L96U_(U) Tire information Typical tire symbols
Tire size (  P. 903)
Summer tires or all season tires (  P. 770)An all season tire has “M+S” on the si dewall. A tire not marked “M+S” is a
summer tire.
Uniform tire quality grading For details, see “Uniform Tire Quality Grading” that follows.
DOT and Tire Identification Number (TIN) (  P. 902)
Tire ply composition and materials Plies are layers of rubber-coated pa rallel cords. Cords are the strands
which form the plies in a tire.
Location of treadwear indicators (  P. 766)
Load limit at maximum co ld tire inflation pressure (  P. 906)
Maximum cold tire inflation pressure (  P. 906)This means the pressure to wh ich a tire may be inflated.

9026-1. Specifications
LX570_OM_OM60L96U_(U) Typical DOT and Tire Iden tification Number (TIN)
DOT symbol
*Tire Identification Number
(TIN)
Tire manufacturer’s identifica-
tion mark
Tire size code
Manufacturer’s optional tire
type code (3 or 4 letters)
Manufacturing week
Manufacturing year
* : The DOT symbol certifies that
the tire conforms to applicable
Federal Motor Vehicle Safety
Standards.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 ti re and the tube maintains the air pres-
sure.
Radial tires or bias-ply tires A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is
a bias-ply tire.

9036-1. Specifications
6
Vehicle specifications
LX570_OM_OM60L96U_(U) Tire size
■ 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

9076-1. Specifications
6
Vehicle specifications
LX570_OM_OM60L96U_(U) 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 weig ht or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty 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 capacity) 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 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 (dis-
tributed in accordance with Table 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 pl y cords and that is shaped
to fit the rim

950Alphabetical index
LX570_OM_OM60L96U_(U) Paddle shift switches ...............184, 186
Power back door ................................. 57
Power door lock switch .................... 52
Power window switch ...................... 108
Rear window wiper and
washer switch .................................. 228
VIEW switch ........................................303
Window lock switch ......................... 108
Wipers and washer
switch ........................................222, 228
Tachometer .............................................. 192
Tail lights
Switch ......................................................208
Talk switch ........................ 445, 464, 635
Telephone switch ................................... 616
Theft deterrent system
Alarm ...........................................................121
Engine immobilizer system ............. 119
Tie-down hooks (Cargo hook) .........716
Tire inflation pressure ......................... 775
Tire pressure warning system.......... 766
Tire information
Glossary................................................ 906
Size .......................................................... 895
Tire identification number .............902
Uniform tire quality grading .........904
Tires
Chains ..................................................... 376
Checking ............................................... 766
If you have a flat tire ..........................854
Inflation pressure................................ 775
Replacing .............................................. 859
Rotating tires ........................................ 766
Size .......................................................... 895
Snow tires .............................................. 376 Spare tire ............................................... 854
Tools........................................................... 854
Total load capacity ...............................886
Touch screen.......................................... 404
Towing
Dinghy towing ...................................... 401
Emergency towing ........................... 820
Trailer towing ........................................ 381
TRAC ........................................................ 349
Traction control..................................... 349
Trailer towing .......................................... 381
Trip information display ...................... 201
Trip meter ..................................................192
Turn signal lights
Replacing light bulbs .......... 807, 809
Switch ........................................................189
Wattage ................................................. 896
Vanity lights
Vanity lights...........................................702
Wattage ................................................. 896
Vanity mirrors ........................................ 702
Variable gear ratio steering ............. 349
Vehicle data recordings ....................... 24
Vehicle identification
number .................................................. 887
Vehicle load limits ................................ 375
Vehicle stability control ..................... 349
Ventilators ............................................... 709
VGRS ........................................................ 349
Voice command
switch
* ........................... 445, 464, 635
VSC ........................................................... 349T
V