2014 Acura RLX Owner's Manual

440
uuChecking and Maintaining TiresuDOT Tire Quality Grading (U.S. Vehicles)
Maintenance
DOT Tire Quality Grading (U.S. Vehicles)The tires on your vehicle meet all U.S. Federal Safety
Requirements. All tires are also graded for treadwear, traction,
and temperature performance according to Department of
Transportation (DOT) standards. The following explains these
gradings.
Quality grades can be found where applicable on the tire sidewall
between tread shoulder and maximum section width.
The treadwear grade is a comparative rating based on the wear
rate of the tire when tested under controlled conditions on a
specified government test course. For example, a tire graded 150
would wear one and one-half (1 1/2) times as well on the
government course as a tire graded 100. The relative performance
of tires depends upon the actual conditions of their use, however,
and may depart significantly from the norm due to variations in
driving habits, service practices and differences in road
characteristics and climate.■
Uniform Tire Quality Grading
■
Treadwear
1Uniform Tire Quality GradingFor example:
Treadwear 200
Traction AA
Temperature A
All passenger car tires must conform
to Federal Safety Requirements in
addition to these grades.

441
uuChecking and Maintaining TiresuDOT Tire Quality Grading (U.S. Vehicles)
Maintenance
The traction grades, from highest to lowest, are AA, A, B, and C.
Those grades 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.
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.■
Traction
■
Temperature
1TractionWarning: The traction grade
assigned to this tire is based on
straight-ahead braking traction tests,
and does not include acceleration,
cornering, hydroplaning, or peak
traction characteristics.1TemperatureWarning: The temperature grade for
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.

442
uuChecking and Maintaining TiresuWear Indicators
Maintenance
Wear Indicators
The groove where the wear indicator is
located is 1/16 inch (1.6 mm) shallower than
elsewhere on the tire. If the tread has worn so
that the indicator is exposed, replace the tire.
Worn out tires have poor traction on wet
roads.
Tire Service LifeThe life of your tires is dependent on many factors, including driving habits, road
conditions, vehicle loading, inflation pressure, maintenance history, speed, and
environmental conditions (even when the tires are not in use).
In addition to regular inspections and inflation pressure maintenance, it is
recommended that you have annual inspections performed once the tires reach five
years old. All tires, including the spare
*, should be removed from service after 10
years from the date of manufacture, regardless of their condition or state of wear.
1Checking Tires
High speed driving
We recommend that you do not drive faster than the
posted speed limits and conditions allow. If you drive
at sustained high speeds (models with P245/45R18
96V tires: over 112 mph or 180 km/h, models with
245/40R19 98W tires: over 118 mph or 190 km/h),
adjust the cold tire pressures as shown below to
avoid excessive heat build up and sudden tire failure.Tire Size
P245/45R18 96V
Pressure Front: 35 psi (240 kPa, 2.4 kgf/cm
2)
Rear: 33 psi (230 kPa, 2.3 kgf/cm2)
Tire Size
245/40R19 98W
Pressure Front: 38 psi (260 kPa, 2.7 kgf/cm
2)
Rear: 36 psi (250 kPa, 2.5 kgf/cm2)
Example of a Wear
Indicator mark
* Not available on all models

443
uuChecking and Maintaining TiresuTire and Wheel Replacement
Maintenance
Tire and Wheel ReplacementReplace your tires with radials of the same size, load range, speed rating, and
maximum cold tire pressure rating (as shown on the tire’s sidewall). Using tires of a
different size or construction can cause the ABS and vehicle stability assist (VSA®)
system to work incorrectly.
It is best to replace all four tires at the same time. If that isn’t possible, replace the
front or rear tires in pairs.
Make sure that the wheel’s specifications match those of the original wheels.
If you replace a wheel, only use TPMS specified wheels approved for your vehicle.
1Tire and Wheel Replacement
3
WARNING
Installing improper tires on your vehicle can
affect handling and stability. This can cause
a crash in which you can be seriously hurt or
killed.
Always use the size and type of tires
recommended in this owner’s manual.

444
uuChecking and Maintaining TiresuTire Rotation
Maintenance
Tire RotationRotating tires according to the maintenance messages on the multi-information
display helps to distribute wear more evenly and increase tire life.■Tires without rotation marks
Rotate the tires as shown here.■Tires with rotation marks
Rotate the tires as shown here.
1Tire Rotation
Tires with directional tread patterns should only be
rotated front to back (not from one side to the other).
Directional tires should be mounted with the rotation
indication mark facing forward, as shown below.
FRONT
Direction Mark
FrontFront

445
uuChecking and Maintaining TiresuWinter Tires
Maintenance
Winter TiresIf driving on snowy or frozen roads, mount all season marked M+S tires, snow tires,
or tire chains; reduce speed; and maintain sufficient distance between vehicles when
driving.
Be particularly careful when operating the steering wheel or brakes to prevent
skidding.
Use tire chains, snow tires, or all season tires when necessary or according to the law.
When mounting, refer to the following points.
For winter tires:
•Select the size and load ranges that are the same as the original tires.
•Mount the tires to all four wheels.
For tire chains:
•Install them on the front tires only.
•Because your vehicle has limited tire clearance, we strongly recommend using the
chains listed below:
•Follow the chain manufacturer’s instruction when installing. Mount them as
tightly as you can.
•Check that the chains do not touch the brake lines or suspension.
•Drive slowly.Cable-type: SCC Radial Chain SC1040
1Winter TiresNOTICETraction devices that are the wrong size or improperly
installed can damage your vehicle’s brake lines,
suspension, body, and wheels. Stop driving if they are
hitting any part of the vehicle.
When tire chains are mounted, follow the chain
manufacturer’s instructions regarding vehicle
operational limits.
If your vehicle is equipped with summer tires, be
aware that these tires are not designed for winter
driving conditions. For more information, contact a
dealer.
3
WARNING
Using the wrong chains, or not properly
installing chains, can damage the brake
lines and cause a crash in which you can be
seriously injured or killed.
Follow all instructions in this owner’s
manual regarding the selection and use of
tire chains.

446Maintenance
BatteryChecking the Battery
Check the battery condition monthly. Look at
the test indicator window and check the
terminals for corrosion.
The battery condition is being monitored by
the sensor on the negative terminal. If there is
a problem with the sensor, the warning
message on multi-information display will let
you know. Have your vehicle checked by a
dealer.
If your vehicle’s battery is disconnected or goes dead:
•The audio system is disabled.
2Reactivating the audio system P. 191
•The clock resets.
2Setting the Clock P. 114
•The navigation system
* is disabled.
2Refer to the Navigation System Manual
Charging the BatteryDisconnect both battery cables to prevent damaging your vehicle’s electrical system.
Always disconnect the negative (–) cable first, and reconnect it last.
1BatteryWARNING: Battery post, terminals,
and related accessories contain lead
and lead compounds.
Wash your hands after handling.The test indicator’s color information is on the
battery.
When you find corrosion, clean the battery terminals
by applying a baking powder and water solution.
Clean terminals with a damp towel. Cloth/towel dry
the battery. Coat the terminals with grease to help
prevent future corrosion.
3
WARNING
The battery gives off explosive hydrogen
gas during normal operation.
A spark or flame can cause the battery to
explode with enough force to kill or
seriously hurt you.
When conducting any battery
maintenance, wear protective clothing and
a face shield, or have a skilled technician do
it.
Test Indicator Window
* Not available on all models

447Maintenance
Remote Transmitter CareReplacing the Button BatteryIf the indicator does not come on when the button is pressed, replace the battery.
1.Remove the built-in key.
2.Remove the upper half of the cover by
carefully prying on the edge with a coin.
uRemove carefully to avoid losing the
buttons.
uWrap a coin with a cloth to prevent
scratching the keyless access remote.
3.Make sure to replace the battery with the
correct polarity.
1Replacing the Button BatteryNOTICEAn improperly disposed of battery can damage the
environment. Always confirm local regulations for
battery disposal.
Replacement batteries are commercially available or
at a dealer.
Battery type: CR2032
Battery