flat tire Lexus IS300 2005 Basic Functions / LEXUS 2005 IS300 (OM53489U) Owner's Guide

CHASSIS
355
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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CHASSIS
357
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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CHASSIS
361
Traction AA, A, B, C ± The traction grades, from highest
to lowest, are AA, A, B and C, and they represent the
tire's ability to stop on wet pavement as measured under
controlled conditions on specified government test
surfaces of asphalt and concrete. A tire marked C may
have poor traction performance.
Warning: The traction grade assigned to this tire is
based on braking (straight ahead) traction tests and
does not include cornering (turning) traction.
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 failure. 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.
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CHASSIS
362
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressuretire pressure when the vehicle has been parked for at least 3 hours or m\
ore, or it
has not been driven more than 1.5 km or 1 mile under that condition.
Maximum inflation
pressurethe maximum cold inflation pressure to which a tire may be inflated and \
it is shown
on the sidewall of the tire
Recommended inflation
pressurecold tire inflation pressure recommended by a manufacturer
Accessory weight
the combined weight (in excess of those standard items which may be rep\
laced) of
automatic transmission, power steering, power brakes, power windows, pow\
er
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 maxi\
mum
capacity of fuel, oil, and coolant, and, if so equipped, air conditionin\
g and
additional weight optional engine
Maximum loaded vehicle
weight
the sum of Ð
(a) curb weight;
(b) accessory weight;
(c) vehicle capacity weight; and
(d) production options weight
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CHASSIS
364
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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CHASSIS
368
CHECKING AND REPLACING TIRES
When to replace your tires
SV63006

1New tread 2Tread wear indicator
3Worn tread
Replace the tires when the tread wear indicators
show. The location of tread wear indicators is shown
by the ªTWIº or ª
Dº marks, etc., molded on the
sidewall of each tire.
The tires on your Lexus have built±in tread wear
indicators to help you know when the tires need
replacement. When the tread depth wears to 1.6 mm
(0.06 in.) or less, the indicators will appear. If you can see
the indicators in two or more adjacent grooves, the tire
should be replaced. Vehicles equipped with 215/45ZR17 or 225/45ZR17
tires:
Your Lexus has been fitted with specially
developed tires which provide exceptional dynamic
performance under general road conditions. However
your riding comfort may worsen a little and road noise
may increase during driving. You may also notice that
your tires will wear more rapidly and tire grip
performance will be reduced on the snowy and/or icy
roads when compared to standard tires. Be sure to have
snow tires or tire chains on the snowy and/or icy roads
and drive carefully with the speed appropriate for road
conditions.
NOTICE
Low profile tire like 215/45ZR17 or 225/45ZR17 may have greater damage than usual tires to its
tire wheel when receiving impact from the roadsurface. Therefore, pay attention to the
followings.
Be sure to use with proper tire inflationpressure. If the tire pressure is low, the tire mayhave a greater damage. For detailed information
about tire inflation pressure, see page 344 or 346.
Avoid driving onto high, sharp±edged objectsand other road hazards. Failure to do so can
lead to severe tire damage.
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CHASSIS
369
The effectiveness of snow tires is lost if the tread
wears down below 4 mm (0.16 in.).
If you have tire damage such as cuts, splits, cracks
deep enough to expose the fabric, or bulges
indicating internal damage, the tire should be
replaced.
If a tire often goes flat or cannot be properly repaired due
to the size or location of a cut or other damage, it should
be replaced. If you are not sure, consult with your Lexus
dealer.
If air loss occurs while driving, do not continue driving.
Driving even a short distance can damage a tire beyond
repair.
Any tires which are over 6 years old must be
checked by a qualified technician even if damage is
not obvious.
Tires deteriorate with age even if they have never or
seldom been used.
This applies also to the spare tire and tires stored for
future use.Tire selection
When replacing a tire, use a tire of the same size and
construction, and the same or greater maximum
load as the originally installed tires.
Using any other size or type of tire may seriously affect
handling, ride, speedometer/odometer calibration,
ground clearance, and clearance between the body and
tires or snow chains.
Check that the maximum load of the replaced tire is
greater than 1/2 of the Gross Axle Weight Ratings
(GAWR) of either the front axle or the rear axle,
whichever is greater. As for the maximum load of the tire,
see the load limit at maximum cold tire inflation pressure
mentioned on the sidewall of the tire, and as for the
Gross Axle Weight Ratings (GAWR), see the
Certification Label. For details about the Certification
Label and sidewall of the tire, see pages 316 and 354.
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CHASSIS
371
Snow tire installation
Snow tires should be installed on all wheels.
Installing snow tires on the rear wheels only can lead to an
excessive difference in road grip capability between the front
and rear tires which could cause loss of vehicle control.
CAUTION
Do not drive with the snow tires incorrectly inflated.
 Never drive over 120 km/h (75 mph) with any type of
snow tires.
Tire chain selection
63L009a

1Side chain 2Cross chain
Use the tire chains of correct size.
For 225/45ZR17 tires, use the following type chains.
mm (in.)
A: Diameter of side chain 3.0 (0.12)
B: Diameter of cross chain 4.0 (0.16)
For P205/55R16 or 215/45ZR17 tires, use SAE Class ªSº type
radial tire chains, with the exception of radial cable chains or
V±bar type chains.
Regulations regarding the use of tire chains vary
according to location or type of road. Always check local
regulations before installing chains.
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cv3
GAS STATION INFORMATION

Fuel selection:
Select premium unleaded gasoline with an Octane Rat-
ing of 91 (Research Octane Number 96) or higher for
optimum engine performance. However, if such pre-
mium type cannot be obtained, you may temporarily use
unleaded gasoline with an Octane Rating as low as 87
(Research Octane Number 91).

Fuel tank capacity:
66 L (17.5 gal., 14.5 lmp.gal.)

Engine oil:
ªToyota Genuine Motor Oilº or equivalent
Oil grade: API grade SL ªEnergy±Conservingº or ILSAC
multigrade engine oil.
Recommend oil viscosity ± SAE 5W±30 if normal
temperatures are below 38 C (100F)
Oil capacity: L (qt., lmp.qt.)
Drain and refill with filter 5.4 (5.7, 4.8)
without filter 5.1 (5.4, 4.5)
See page 335 for detailed information.

Engine coolant:
Capacity: 7.5 L (7.9 qt., 6.6 lmp.qt.)
Coolant type ± ªToyota Super Long Life Coolantº or
similar high quality ethylene glycol based non±silicate,
non±amine, non±nitrite, and non±borate coolant with
long±life hybrid organic acid technology. (Coolant with
long±life hybrid organic acid technology is a
combination of low phosphates and organic acids.)
Do not use plain water alone. For checking the engine coolant, see page 337.

Automatic transmission:
Fluid type ± Toyota Genuine ATF Type T±IV
See page 342 for detailed information.

Tire information:
See page 351 through 374 for detailed information.

Tire inflation pressure:
Tire size: 225/45ZR17, 215/45ZR17 or P205/55R16 89V
Tire pressure: cold tires
kPa (kgf/cm
2 or bar, psi)
Ti
re sizeFrontRear
225/45ZR17 ± 240 (2.4, 35)
215/45ZR17 230 (2.3, 33) 230 (2.3, 33)
P205/55R16 89V 230 (2.3, 33) 230 (2.3, 33)
For sustained high speeds above 160 km/h (100 mph), in
countries where such speeds are permitted by law, add the
tire pressure given below to the front tires and rear tires, but
never exceed the maximum cold tire pressure molded on the tire sidewall.
225/45ZR17 70kPa (0.8 kgf/cm
2, 0.7 bar, 10 psi)
215/45ZR17 70kPa (0.8 kgf/cm2, 0.7 bar, 10 psi)
P205/55R16 89V
Sedan 70kPa (0.8 kgf/cm
2, 0.7 bar, 10 psi)
SportCross Front: 70kPa (0.8 kgf/cm2, 0.7 bar, 10 psi)
Rear: 90kPa (0.9 kgf/cm2, 0.9 bar, 15 psi)
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