2008 Lexus ES350 tire pressure

5
When trouble arises
393
5-2. Steps to take in an emergency
ES350_U_(L/O_0708)
NOTICE
■Do not drive the vehicle with a flat tire.
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel
beyond repair.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-
mitter may be damaged if not handled correctly.
■To avoid damaging the tire pressure warning valves and transmitters
Do not use liquid sealants on flat tires.
■Be careful when driving over bumps with the compact spare tire installed on the
vehicle.
The vehicle becomes lower when driving with the compact spare tire compared to
when driving with standard tires. Be careful when driving over uneven road sur-
faces.
■Driving with tire chains and the compact spare tire
Do not fit tire chains to the compact spare tire.
Tire chains may damage the vehicle body and adversely affect driving performance.

415
6-1. Specifications
6
Vehicle specifications
ES350_U_(L/O_0708)
Tires and wheelsType A
Ti r e s i z eP215/55R17 93V
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Driving under normal conditions Front:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Rear:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
Spare:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)
When driving at high speeds above 100 mph
(160 km/h), in countries where such speeds are
permitted by law, add 4.3 psi (30 kPa, 0.3 kgf/
cm
2 or bar) to the front tires and rear tires.
Never exceed the maximum cold tire inflation
pressure indicated on the tire sidewall.
Towing a trailer
Front:
32 psi (220 kPa, 2.1 kgf/cm
2 or bar)
Rear:
32 psi (220 kPa, 2.1 kgf/cm
2 or bar)
Spare:
32 psi (220 kPa, 2.1 kgf/cm
2 or bar)
Wheel size17 × 7J
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

416
6-1. Specifications
ES350_U_(L/O_0708)Ty p e B
Ti r e s i z eP215/55R17 93V,
T155/70D17 110M (spare)
Tire inflation pressure
(Recommended cold tire inflation
pressure)
Driving under normal conditions
Front:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)*
Rear:
30 psi (210 kPa, 2.1 kgf/cm
2 or bar)*
Spare:
60 psi (420 kPa, 4.2 kgf/cm
2 or bar)
*:When driving at high speeds above 100 mph (160 km/h), in countries where such
speeds are permitted by law, add 4.3 psi
(30 kPa, 0.3 kgf/cm
2 or bar) to the front
tires and rear tires. Never exceed the max-
imum cold tire inflation pressure indicated
on the tire sidewall.
Towing a trailer Front:
32 psi (220 kPa, 2.1 kgf/cm
2 or bar)
Rear:
32 psi (220 kPa, 2.1 kgf/cm
2 or bar)
Wheel size17 × 7J, 17 × 4T (spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

422
6-1. Specifications
ES350_U_(L/O_0708)
Tire size (→ P. 4 2 3 )
DOT and Tire Identification Number (TIN) (→ P. 4 2 3 )
Location of treadwear indicators (→ P. 4 2 4 )
Tire ply composition and materials
Plies are layers of rubber-coated 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 filled in the tire. A
tube type tire has a tube inside the ti re and the tube maintains the air pres-
sure.
Load limit at maximum cold tire inflation pressure ( →P. 4 2 6 )
Maximum cold tire inflation pressure (→ P. 4 2 6 )
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 tire or all season tire (→ P. 321)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
TEMPORARY USE ONLY (→ P. 390)
A compact spare tire is identified by the phrase “TEMPORARY USE
ONLY” molded into its sidewall. This tire is designed for temporary emer-
gency use only.

426
6-1. Specifications
ES350_U_(L/O_0708)■
Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing
the tire's resistance to the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a specified indoor
laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate
and reduce tire life, and excessive temperature can lead to sudden tire fail-
ure.
The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire 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 under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, 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)

429
6-1. Specifications
6
Vehicle specifications
ES350_U_(L/O_0708)
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
GrooveThe space between two adjacent tread ribs
InnerlinerThe layer(s) forming the inside surface of a tubeless
tire that contains the inflating medium within the tire
Innerliner separationThe parting of the innerliner from cord material in the
carcass
Intended outboard side-
wall
(a) The sidewall that contains a whitewall, bears white lettering, or bears manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other side-
wall of the tire, or
(b) The outward facing sidewall of an asymmetrical
tire that has a particular side that must always
face outward when mounted on a vehicle
Light truck (LT) tire
A tire designated by its manufacturer as primarily
intended for use on lightweight trucks or multipur-
pose passenger vehicles
Load ratingThe maximum load that a tire is rated to carry for a
given inflation pressure
Maximum load ratingThe load rating for a tire at the maximum permissible
inflation pressure for that tire
Maximum permissible
inflation pressureThe maximum cold inflation pressure to which a tire
may be inflated
Tire related termMeaning

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6-1. Specifications
ES350_U_(L/O_0708)
Measuring rimThe rim on which a tire is fitted for physical dimension
requirements
Open spliceAny parting at any junction of tread, sidewall, or
innerliner that extends to cord material
Outer diameterThe overall diameter of an inflated new tire
Overall width
The linear distance between the exteriors of the side-
walls of an inflated tire, including elevations due to
labeling, decorations, or protective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipur-
pose passenger vehicles, and trucks, that have a
gross vehicle weight rating (GVWR) of 10,000 lb. or
less.
PlyA layer of rubber-coated parallel cords
Ply separationA parting of rubber compound between adjacent
plies
Pneumatic tire
A mechanical device made of rubber, chemicals, fab-
ric 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
SidewallThat portion of a tire between the tread and bead
Tire related termMeaning

438
ES350_U_(L/O_0708)
6-3. Initialization
Items to initialize
ItemWhen to initializeReference
Engine oil maintenance
data (USA only)After changing engine oilP. 3 0 3
Tire pressure warning
systemWhen changing the tire inflation pres-
sure by changing traveling speed or
load weight, etc.
P. 3 1 7
After reconnecting or performing maintenance on the battery, the follow-
ing items must be initialized for normal system operation.