2016 LEXUS RX350 tire pressure

6819-1. Specifications
9
Vehicle specifications
RX350_U_OM48E90U 
Ty p e B Ti r e s i z e 235/55R20 102V, T165/90D18 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 11 psi (70 kPa, 0.7 kgf/cm 2
or bar) to the
front and rear tires. Never exceed the maximum
cold tire inflation pressure indicated on the tire
sidewall.
Wheel size 20  8 J, 18  4 T (spare)
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)

6879-1. Specifications
9
Vehicle specifications
RX350_U_OM48E90U Ti r e s i z e (  P. 6 8 9 )
DOT and Tire Identification Number (TIN) (  P. 6 8 8 )
Location of treadwear indicators (  P. 5 8 4 )
Tire ply composition and materials Plies are layers of rubber-coated parallel co rds. 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. 5 8 7 )
Maximum cold tire inflation pressure (  P. 6 8 0 )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. 5 8 8 )An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a summer
tire.
“TEMPORARY USE ONLY” A compact spare tire is identified by the phrase “TEMPORARY USE ONLY” molded
on its sidewall. This tire is desi gned for temporary emergency use only.1
2
3
4
5
6
7
8
9
10
11

6939-1. Specifications
9
Vehicle specifications
RX350_U_OM48E90U Glossary of tire terminology Tire related term Meaning
Cold tire inflation 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 un der that condition
Maximum inflation pres-
sure The maximum cold inflated pressure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressure Cold tire inflation pressure recommended by a manu-
facturer
Accessory weight The combined weight (in excess of those standard items
which may be replaced) of automatic transmission,
power steering, power brakes, power windows, power
seats, radio and heater, to the extent that these items are
available as factory-installed equipment (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 co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight 150 lb. (68 kg) times the numb er of occupa nts specified
in the second column of Table 1
* that follows
Occupant distribution Distribution of occupants in a vehicle as specified in the
third column of Table 1
* below

6959-1. Specifications
9
Vehicle specifications
RX350_U_OM48E90U Bead separation A breakdown of the bond be tween components in the
bead
Bias ply tire A 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
Carcass The tire structure, except tread and sidewall rubber
which, when inflated, bears the load
Chunking The breaking away of pieces of the tread or sidewall
Cord The strands forming th e plies in the tire
Cord separation The parting of cords from adjacent rubber compounds
Cracking Any parting within the tread, sidewall, or innerliner of
the tire extending to cord material
CT A pneumatic tire with an inverted flange tire and rim
system in which the rim is designed with rim flanges
pointed radially inward and the tire is designed to fit on
the underside of the rim in a manner that encloses the
rim flanges inside the air cavity of the tire
Extra load tire A tire designed to operate at higher loads and at higher
inflation pressures than the corresponding standard tire
Groove The space between two adjacent tread ribs
Innerliner The layer(s) forming the inside surface of a tubeless tire
that contains the inflating medium within the tire
Innerliner separation The parting of the i nnerliner from cord material in the
carcassTire related term Meaning

696 9-1. Specifications
RX350_U_OM48E90U Intended outboard sidewall (a) The sidewall that contains a whitewall, bears white
lettering, or bears manu facturer, brand, and/or
model name molding that is higher or deeper than
the same molding on the other sidewall of the tire, or
(b) The outward facing sidewall of an asymmetrical tire
that has a particular side that must always face out-
ward when mounted on a vehicle
Light truck (LT) tire A tire designated by its manufacturer as primarily
intended for use on lightweight trucks or multipurpose
passenger vehicles
Load rating The maximum load that a tire is rated to carry for a given
inflation pressure
Maximum load rating The load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible infla-
tion pressure The maximum cold inflation pressure to which a tire may
be inflated
Measuring rim The rim on which a tire is fitted for physical dimension
requirements
Open splice Any parting at any junction of tread, sidewall, or inner-
liner that extends to cord material
Outer diameter The overall diameter of an inflated new tire
Overall width The linear distance between the exteriors of the side-
walls of an inflated tire, incl uding elevations due to label-
ing, decorations, or pr otective bands or ribs
Passenger car tire A tire intended for use on passenger cars, multipurpose
passenger vehicles, and trucks, that have a gross vehicle
weight rating (GVWR) of 10,000 lb. or less.
Ply A layer of rubber-coated parallel cords
Ply separation A parting of rubber compou nd between adjacent pliesTire related term Meaning

6979-1. Specifications
9
Vehicle specifications
RX350_U_OM48E90U Pneumatic tire A mechanical device made of rubber, chemicals, fabric
and steel or other materials, that, when mounted on an
automotive wheel, provides the traction and contains
the gas or fluid that sustains the load
Radial ply tire A pneumatic tire in which the ply cords that extend to
the beads are laid at substantially 90 degrees to the
centerline of the tread
Reinforced tire A tire designed to operate at higher loads and at higher
inflation pressures than the corresponding standard tire
Section width The linear distance between the exteriors of the side-
walls of an inflated tire, excluding elevations due to
labeling, decoration, or protective bands
Sidewall That portion of a tire between the tread and bead
Sidewall separation The parting of the rubber compound from the cord
material in the sidewall
Snow tire A tire that attains a traction index equal to or greater
than 110, compared to the ASTM E-1136 Standard Ref-
erence Test Tire, when using the snow traction test as
described in ASTM F-1805-00, Standard Test Method
for Single Wheel Driving Tract ion in a Straight Line on
Snow-and Ice-Covered Surfaces, and which is marked
with an Alpine Symbol (
) on at least one sidewall
Te s t r i m The rim on which a tire is fitted for testing, and may be
any rim listed as appropriate for use with that tire
Tr e a d That portion of a tire that comes into contact with the
road
Tr e a d r i b A tread section running circumferentially around a tireTire related term Meaning

712
RX350_U_OM48E90U 9-3. Initialization
Items to initialize The following items must be initialized for normal system operation after such
cases as the battery being reconnecte d, or maintenance being performed on
the vehicle. Item When to initialize Reference
Message indicating mainte-
nance is required (U.S.A. only) • After the maintenance is per-
formed P. 5 6 5
Tire pressure warning system • When changing the tire inflation
pressure by changing traveling
speed
• When changing the tire size
• When rotating the tires P. 5 8 6
Oil maintenance • After the maintenance is per-
formed P. 5 7 7
Power back door • After reconnecting or changing
the battery P. 1 3 8

738 Alphabetical index
RX350_U_OM48E90U Hands-free system
(for cellular phone) ........................... 450
Head restraints ........................................ 167
Head-up display......................................107
Headlight cleaner................................. 250
Headlights ................................................. 241
Automatic headlight leveling ....... 243
Automatic High Beam ....................245
Light switch .............................................241
Replacing light bulbs ......................... 610
Wattage ................................................. 682
Windshield wiper linked
headlight illumination.................... 244
Heated steering wheel ....................... 506
Heaters
Automatic air conditioning
system ................................................. 495
Heated steering wheel ................... 506
Outside rear view mirrors ............ 500
Seat heaters .............................506, 507
High mounted stoplight
Replacing ................................................ 610
Hill-start assist control ........................ 374
Hood .......................................................... 572
Hooks
Cargo hooks ......................................... 518
Cargo net hooks ................................. 518
Front passenger footwell
hooks ................................................... 533
Grocery bag hooks........................... 519
Retaining hooks (floor mat) ............. 26
Horn .............................................................169
HUD (Head-up display) ......................107 I/M test ..................................................... 569
Identification
Engine ..................................................... 676
Vehicle .................................................... 675
Ignition switch (engine switch) ....... 220
Illuminated entry system ...................... 511
Immobilizer system ................................. 74
Indicators .................................................... 80
Initialization
Engine oil maintenance data ....... 577
Items to initialize ................................... 712
Power back door ............................... 138
Tire pressure warning system .... 585
Inside rear view mirror...........................171
Instrument panel light control .............87
Interior lights .......................................... 508
Switch ..................................................... 509
Wattage ................................................. 682
Intuitive parking assist ........................ 330
Jack
Positioning a floor jack.................... 573
Vehicle-equipped jack ................... 647
Jack handle .............................................. 647
Jam protection function
Electronic sunshade.......................... 186
Moon roof ...............................................182
Panoramic moon roof...................... 186
Power back door opener
and closer ........................................... 138
Power windows....................................178H I
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