wheel Lexus ES300 1994 Chassis

SECTION 6 – 3
181
SERVICE PROCEDURES AND
SPECIFICATIONS
Chassis
Specifications182 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking brake fluid184 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking brake pedal freeplay185 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking brake pedal clearance185 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking parking brake adjustment186 . . . . . . . . . . . . . . . . . . . . . . . .
Checking the brake booster186 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking power steering fluid187 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking steering wheel freeplay188 . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking automatic transmission fluid188 . . . . . . . . . . . . . . . . . . . . . .
Checking tire pressure190 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rotating tires191 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing tires191 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing snow tires and chains194 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing wheels195 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Aluminum wheel precautions195 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CHASSIS
183 − STEERING
Wheel freeplay
Power steering fluid type
Less than 30 mm (1.2 in.)
Automatic transmission fluid DEXRON
®-II
− TIRES AND WHEELS
Tire size
Recommended cold tire inflation pressure:
Vehicle load up to 4 occupants
Vehicle load up to vehicle capacity weight
Spare tire
Trailer towing (conventional and snow tires)
Wheel size
Standard tire
Spare tire
Wheel nut torque
P205 / 65 R15 92V or P205 / 65 R15 AS 92V
180 kPa (1.8 kg / cm
2 or bar, 26 psi) (Both front and rear)
220 kPa (2.2 kg / cm
2 or bar, 32 psi) (Both front and rear)
220 kPa (2.2 kg / cm
2 or bar, 32 psi)
220 kPa (2.2 kg / cm
2 or bar, 32 psi) (Both front and rear)
15 x 6 JJ (aluminum wheels)
15 x 6 JJ (steel wheel)
103 N
.m (10.5 kgf-m, 76 ft-lb)

CHASSIS
188
CHECKING STEERING WHEEL
FREEPLAY
30 mm (1.2 in.)
Max.
With the vehicle stopped and the front wheels pointed
straight ahead, rock the steering wheel gently back and
forth. If the freeplay is more than specified, have it
inspected by your Lexus dealer.
Use only a very light finger pressure to rock the wheel slowly.
CHECKING AUTOMATIC
TRANSMISSION FLUID
1. Check the fluid level only when the transmission is at
normal operating temperature. With the vehicle level, first
set the parking brake and then start the engine. While the
engine is idling, depress the brake pedal and shift the
selector lever into each position from “P” to “L” and
return to “P”.
If the vehicle has been driven over 16 km or 10 miles (24 km
or 15 miles in frigid temperatures) and the fluid temperature is
70
C − 80
C (160
F − 175
F), the transmission is at normal
operating temperature.
You may check the level when the transmission is cold. If the
vehicle has not been driven for over five hours and the fluid is
about room temperature 20
C − 30
C (70
F − 85
F), the
transmission is cold.
However, checking a cold transmission is to be used for your
reference only and the transmission must be checked again for
correct level at normal operating temperature.
If the vehicle has just been driven for a long time at high speed,
in city traffic in hot weather, or the vehicle has been pulling a
trailer, an accurate fluid level cannot be obtained. Check the
level after the fluid has cooled down (about 30 minutes.)

CHASSIS
190
CHECKING TIRE PRESSURE
The recommended cold tire pressures, tire size and the
vehicle capacity weight are given on the label inside the
glovebox lid.
You should check the tire pressures every two weeks, or at
least once a month. Arid don’t forget the spare! The air
pressure for the spare tire should be 30 kPa (0.3 kg / cm
2 or bar,
4 psi) above the recommended cold tire pressure. Incorrect tire
pressure can reduce tire life and make your vehicle less safe
to drive.
Low tire pressure results in excessive wear, poor handling,
reduced fuel economy, and the possibility of blowouts from
overheated tires. Also, low tire pressure can cause poor
sealing of the tire bead. If the tire pressure is excessively low,
there is the possibility of wheel deformation and / or tire
separation. So keep your tire pressures at the proper level. If
a tire needs frequent refilling, have it checked by your Lexus
dealer.High tire pressure produces a harsh ride, handling problems.
excessive wear at the center of the tire tread, and a greater
possibility of tire damage from road hazards.
The following instructions for checking tire pressure should be
observed:
The 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 pressure reading.
Always use a tire pressure gauge. The appearance of the
tire can be misleading. Besides, tire pressures that are even
just a few pounds off can degrade handling and ride.
Do not bleed or reduce tire pressure after driving. It is
normal for the tire pressure to be higher after driving.
Never exceed the vehicle capacity weight. The
passenger and luggage weight should be located so that the
vehicle is balanced.
Be sure to reinstall the tire valve caps. Without the valve
caps, dirt or moisture could get into the valve core and
cause air leakage. If the caps have been lost, have new
ones put on as soon as possible.

CHASSIS
191
ROTATING TIRES
To equalize tire wear and help extend tire life, Lexus
recommends that you rotate your tires approximately
every 12000 km (7500 miles). 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 only between the front
and rear 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.
CHECKING AND REPLACING TIRES
When to replace your tires
New treadTread wear indicatorWorn tread
Replace the tires when the tread wear indicators show.
The location of the tread wear indicators is shown by the
“TWI” or “
” marks molded on the sidewall of each tire.
The tires on your Lexus have built-in tread wear indicators to
show you 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.
The effectiveness of snow tires is lost if the tread wears
down below 4 mm (0.16 in.).

CHASSIS
193 Traction A, B, C − The traction grades, from highest to lowest,
are 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 grade of this tire is 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.
Tire selection
When replacing a tire, use only the same size and
construction as originally installed and with the same or
greater load capacity.
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
Do not mix radial, belted, or conventional tires on your
vehicle.
It can cause dangerous handling characteristics, resulting in
loss of control. If you need to change from conventional tires
to radial tires or vice versa, replace them as a set.

CHASSIS
194
INSTALLING SNOW TIRES AND
CHAINS
When to use snow tires or chains
Snow tires or chains are recommended when driving on
snow or ice.
On wet or dry roads, conventional or radial tires provide better
traction than snow or studded tires.
Snow tire selection
If you need snow tires, select the same size, construction
and load capacity as the original tires on your Lexus.
Do not use tires other than stated above. Since your vehicle
has radial tires as original equipment, make sure your snow
tires also have radial construction. Do not install studded tires
without first checking local regulations for possible restrictions.
Snow tire installation
Snow tires should be installed on all wheels.
Installing snow tires on the front 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:
Snow tires should be inflated to the same pressure as
the original tires.
Never drive over 120 km / h (75 mph) with any type of
snow tires.
Tire chain selection
Regulations regarding the use of tire chains vary
according to region and type of road. Always check the
local regulations before installing chains.
Use SAE Class “S” type radial tire chains, with the exception
of radial cable chains or V-bar type chains.
Chain installation
When installing chains on your tires, carefully follow the
instructions of the chain manufacturer.
Install the chains on the front tires as tightly as possible. Do not
use tire chains on the rear tires. Retighten chains after driving
0.5 − 1.0 km (1 / 4 − 1 / 2 mile).
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.

CHASSIS
195
REPLACING WHEELS
When to replace your wheels
If you have wheel damage such as bends, cracks or heavy
corrosion, the wheel should be replaced.
If you fail to replace damaged wheels, a tire may slip off a wheel
or they may cause loss of handling control.
Replacement with used wheels is not recommended as they
may have been subjected to rough treatment or high mileage
and could fail without warning. Also, bent wheels which have
been straightened may have hidden structural damage and
therefore should not be used. Never use an inner tube in a
leaking wheel which is designed for a tubeless tire.
Wheel selection
When replacing wheels, care should be taken to ensure
that they are equivalent to those removed in load capacity,
diameter, rim width, and offset.
Correct replacement wheels are available at your Lexus
dealer.
A wheel of a different size or type may adversely affect
handling, wheel and bearing life, brake cooling,
speedometer / odometer calibration, stopping ability, headlight
aim, bumper height, vehicle ground clearance, and tire or snow
chain clearance to the body and chassis.
ALUMINUM WHEEL PRECAUTIONS
After driving your vehicle the first 1600 km (1000 miles).
check that the wheel nuts are tight.
If you have rotated, repaired, or changed your tires, check
that the wheel nuts are still tight after driving 1600 km (1000
miles).
When using tire chains, be careful not to damage the
aluminum wheels.
Use only the Lexus wheel nuts and wrench designed for
your aluminum wheels.
When balancing your wheels, use only Lexus balance
weights or equivalent and a plastic or rubber hammer.
As with any wheel, periodically check your aluminum
wheels for damage. If damaged, replace immediately.