2005 Lexus IS300 spare tire

CHASSIS
347
± TIRES AND WHEELS (Type C)
Standard tire:Tire size
P205/55R16 89V
Tire inflation pressureRecommended cold tire inflation pressure
Front 230 kPa (2.3 kgf/cm2 or bar, 33 psi)
Rear 230 kPa (2.3 kgf/cm2 or bar, 33 psi)
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.
Sedan 70 kPa (0.8 kgf/cm
2, 0.7 bar, 10 psi)
SportCross Front: 70 kPa (0.8 kgf/cm
2, 0.7 bar, 10 psi)
Rear: 90 kPa (0.9 kgf/cm2, 0.9 bar, 15 psi)
Wheel size16 x 6 1/2JJ
Wheel nut torque103 N´m (10.5 kgf´m, 76 ft´lbf.)
Compact spare tire (IS300 sold in Canada only):
Tire size
T125/70D17 98M
Tire inflation pressure420 kPa (4.2 kgf/cm2 or bar, 60 psi)
04 06.30

CHASSIS
352
You should check the tire inflation pressure every two
weeks, or at least once a month. And do not forget the
spare. The inflation pressure for the spare tire should be
adjusted according to the conditions in the table on page
344, 346 or 347.
The following instructions for checking tire inflation
pressure should be observed:
 The inflation pressure should be checked only
when the tires are cold. If your vehicle has been
parked for at least 3 hours and has not been driven for
more than 1.5 km or 1 mile since, you will get an accurate cold tire inflation pressure reading.
 Always use a tire pressure gauge. The appearance
of the tire can be misleading. Besides, tire inflation
pressures that are even just a few pounds off can
degrade ride and handling.
 Do not bleed or reduce tire inflation pressure after
driving. It is normal for the tire inflation pressure to be
higher after driving.
 Never exceed the vehicle capacity weight.
Passengers and luggage weight should be located so that the vehicle is balanced.
CAUTION
The inflation pressure for the compact spare tire
must be 420 kPa (4.3 kgf/cm2, 4.2 bar, 60 psi).
Inspection and adjustment procedure
SV63010

1Tire valve
2Tire pressure gauge
1. Remove the tire valve cap.
2. Press the tip of the tire pressure gauge to the tire
valve.
3. Read the pressure using the graduations of the
gauge.
4. In case the tire inflation pressure is not within the
prescribed range, insert the compressed air from the
valve. In case of applying too much air, press the center
of the valve and release the air to adjust.
5. After completing the tire inflation pressure
measurement and adjustment, apply soapy water to the
valve and check for leakage.
04 06.30

CHASSIS
356
Tire symbols (Compact spare tire)
SV63017

The illustration indicates typical tire symbols.
04 06.30

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.
04 06.30

CHASSIS
367
ROTATING TIRES (SportCross)
SV63007

With the P205/55R16 or 215/45ZR17 tires
To equalize tire wear and help extend tire life, Lexus
recommends that you rotate your tires according to
the maintenance schedule. (For scheduled
maintenance information, please refer to the
ªOwner's Manual Supplement/Scheduled
Maintenanceº.) However, the most appropriate
timing for tire rotation may vary according to your
driving habits and road surface conditions.
The wheel assemblies must be rotated as illustrated
above.
When rotating tires, check for uneven wear and
damage. Abnormal wear is usually caused by incorrect
tire pressure, improper wheel alignment, out±of balance
wheels, or severe braking. Before storing radial, snow or studded tires, mark the
direction of rotation and be sure to install them in the
same direction when using them again. Tires should be
stored in a cool dry place.
SV63009

With the 215/45ZR17 tires for front and the
225/45ZR17 tires for rear
Do not perform rotation of the tires, from front to rear
or from left to right, or using the spare tire,
performing such tire rotation may result in the tires
interfering with the body or in uneven wear of the
tires, so that steerability of the vehicle is impaired.
04 06.30

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.
04 06.30

CHASSIS
372
NOTICE
If the wrong combination of tire and chain is used, thechains could damage the vehicle body.
Chain installation
Install the chains on the rear tires as tightly as possible.
Do not use tire chains on the front tires. Retighten chains
after driving 0.5 ± 1.0 km (1/4 ± 1/2 mile).
When installing chains on your tires, carefully follow the
instructions of the chain manufacturer.
CAUTION
 Do not exceed 50 km/h (30 mph) or the chain
manufacturer's recommended speed limit,
whichever is lower.
 Drive carefully avoiding bumps, holes, and sharp
turns, which may cause the vehicle to bounce.
 Avoid sharp turns or locked±wheel braking, as use of
chains may adversely affect vehicle handling.
 When driving with chains installed, be sure to drive
carefully. Slow down before entering curves to avoid
losing control of the vehicle, it may cause an
accident.
NOTICE
Do not attempt to use a tire chain on the compact spare tire, as it may result in damage to the vehicle as well asthe tire.
04 06.30

ELECTRICAL COMPONENTS
385
It is a good idea to purchase a set of spare fuses and keep them
in your vehicle for emergencies.
If the new fuse immediately blows out, there is a problem with
the electrical system. Have your Lexus dealer correct it as
soon as possible.
CAUTION
Never use a fuse with a higher amperage rating, or any
other object, in place of a fuse. This may cause
extensive damage and possibly a fire.
CHECKING THE CARTRIDGE TYPE
FUSES
SV64005

1Good 2Melted
If the headlights or other electrical components do not
work and the blade type fuses are O.K., check the
cartridge type fuses. If any of the cartridge type fuses are
blown, they must be replaced.
If there is an overload in the circuits from the battery, the fuses
are designed to blow before the entire wiring harness is
damaged.
04 06.30