2005 Lexus IS300 tire size

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348
Wheel size17 x 4T
Wheel nut torque103 N´m (10.5 kgf´m, 76 ft´lbf.)
NOTE:
For complete information on tires (e.g. replacing tires or replacing wh\
eels), see ªChecking tire inflation pressureº
through ªAluminum wheel precautionsº on page 351 through 374.
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351
CAUTION
The reservoir may be hot so be careful not to burn
yourself.
NOTICE
Avoid overfilling, or the power steering could bedamaged.
When adding the power steering fluid, avoid spillingit. The generator under the power steering reservoircould be damaged if fluid is spilled on it.
CHECKING TIRE INFLATION PRESSURE
SV61010a
The recommended cold tire inflation pressure, tire
size and the combined weight of occupants and
cargo (vehicle capacity weight) are described on the
tire and loading information label.
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1Tire size: For details, see ªTire sizeº on page
358.
2DOT and Tire Identification Number (TIN): For
details, see ªDOT and Tire Identification Number
(TIN)º on page 358.
3Maximum cold tire inflation pressure: This
means the pressure to which a tire may be
inflated. For recommended cold tire inflation
pressure, see ªSpecificationsº on page 344, 346
or 347.
4Load limit at maximum cold tire inflation
pressure: For details, see ªChecking and
replacing tiresº on page 368.
5Turning indicator: Some vehicles are equipped
with directional tires. For details, see ªRotating
tiresº on page 366 or 367.
6Tire ply composition and materials : Plies
mean a layer of rubber±coated parallel cords.
Cords mean the strands forming the plies in the
tire.
7Uniform tire quality grading: For details, see
ªUniform tire quality gradingº that follows.
8Location of tread wear indicators: For details,
see ªChecking and replacing tiresº on page 368.
9ªTUBELESSº or ªTUBE TYPEº: A tubeless tire
does not have a tube inside the tire and air is
directly filled in the tire. A tube type tire has a tube
inside the tire and the tube maintains the air
pressure.
10Radial tires or bias±ply tires: A radial tire has
ªRADIALº on the sidewall. A tire not marked with
ªRADIALº is a bias±ply tire.
11Summer tire or all season tire: An all season
tire has ªM+Sº on the sidewall. The tire not
marked with ªM+Sº is a summer tire. For details,
see ªTypes of tiresº on page 365.
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1ªTEMPORARY USE ONLYº: A compact spare
tire is identified by the phrase ªTEMPORARY
USE ONLYº molded into its sidewall. This tire is
designed for temporary emergency use only. For
details, see ªCompact spare tireº on page 287.
2Tire size: For details, see ªTire sizeº on page
358.
3DOT and Tire Identification Number (TIN): For
details, see ªDOT and Tire Identification Number
(TIN)º on page 358.
4Location of tread wear indicators: For details,
see ªChecking and replacing tiresº on page 368.
5Load limit at maximum cold tire inflation
pressure: For details, see ªChecking and
replacing tiresº on page 368.
6Maximum cold tire inflation pressure: This
means the pressure to which a tire may be
inflated. For recommended cold tire inflation
pressure, see ªSpecificationsº on page 344, 346
or 347.
7Tire ply composition and materials : Plies
mean a layer of rubber±coated parallel cords.
Cords mean the strands forming the plies in the
tire.
8ªTUBELESSº or ªTUBE TYPEº: A tubeless tire
does not have a tube inside the tire and air is
directly filled in the tire. A tube type tire has a tube
inside the tire and the tube maintains the air
pressure.
9Radial tires or bias±ply tires: A radial tire has
ªRADIALº on the sidewall. A tire not marked with
ªRADIALº is a bias±ply tire.
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358
DOT and Tire Identification Number (TIN)
SV63015

The illustration indicates typical DOT and TireIdentification Number (TIN)
1ªDOTº symbol
2Tire Identification Number (TIN)
3Tire manufacturer's identification mark
4Tire size code
5Manufacturer's optional tire type code
6Manufacturing week
7Manufacturing year
The ªDOTº symbol certifies that the tire conforms to
applicable Federal Motor Vehicle Safety Standards.
Tire size
SV63014b

Type A
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359
SV63013a

Type BThe illustration indicates typical tire size.
1Tire use (P=Passenger car, T=Temporary use)
2Section width (in millimeters)
3Aspect ratio (tire height to section width)
4Speed category (alphabet with one letter)
5Tire construction code(R=Radial, D=Diagonal)
6Wheel diameter (in inches)
7Load index (2 digits or 3 digits)
8Speed symbol (alphabet with one letter)
SV63012c

1Section width
2Tire height
3Wheel diameter
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Tire related termMeaning
Rim size designationrim diameter and width
Rim type designationthe industry of manufacturer's designation for a rim by style or code
Rim widthnominal distance between rim flanges
Vehicle maximum load on
the tirethe load on an individual tire that is determined by distributing to eac\
h axle its
share of the maximum loaded vehicle weight and dividing by two
Vehicle normal load on
the tirethe load on an individual tire that is determined by distributing to eac\
h axle its
share of the curb weight, accessory weight, and normal occupant weight
(distributed in accordance with Table 1 that follows) and dividing by two
Weather sidethe surface area of the rim not covered by the inflated tire
Table 1 ± Occupant loading and distribution for vehicle normal load fo\
r various designated seating capacitiesDesignated seating capacity,Number of occupants
Vehicle normal load,
Number of occupantsOccupant distribution in a normally loaded vehicle
2 through 422 in front
5 through 1032 in front, 1 in second seat
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TYPES OF TIRES
Determine what kind of tires your vehicle is originally
equipped with.
1. Summer tires
Summer tires are high±speed capability 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 or icy roads, we
recommend using snow tires. If installing snow tires, be
sure to replace all four tires.
2. 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 all year round.
All season tires, however, 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 performance compared with summer tires in
highway driving.
The details about how to distinguish summer tires from
all season tires are described on page 354.
CAUTION
 Do not mix summer and all season tires on your
vehicle as this can cause dangerous handling
characteristics, resulting in loss of control.
 Do not use tires other than the manufacturer's
designated tires, and never mix tires or wheels
of the sizes different from the originals as this
can cause dangerous handling characteristics,
resulting in loss of control.
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