width Acura RLX 2017 Quick Guide

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Tire Service Life
The 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.
Winter Tires
If driving on snowy or frozen roads, mount all season tires marked “M+S”, snow
tires, or tire chains; reduce speed; and maintain sufficient distance between
vehicles when driving. For winter tires, select the size and load ranges that are the
same as the original tires, and mount them to all four wheels.
Tire Chains
Install tire chains on the front tires only. Because your vehicle has limited tire
clearance, we strongly recommend using the following chains: Cable type: SCC
Radial Chain SC1040. Mount chains as tightly as you can, and make sure that
they do not touch the brake lines or suspension.
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 guide regarding the selection and use of tire
chains.
WARNING
Traction 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.
NOTICE
Tire Labeling
The tires that came on your vehicle have a number of markings. Those you
should be aware of are described below.
Here is an example of what each marking means:
P245/40R19 98W
•
P: v
ehicle type (passenger)
•

2
45: tire width in millimeters
•

40: aspect ratio (tir
e section height as a
percentage of its width)
•

R:
tire construction code (radial)
•

19: rim
diameter in inches
•

98: load index (code indicating
maximum load

tire can carry)
•

W: speed symbol (code indicating
maximum speed rating)
Tire Identification Number (TIN)
The tire identification number (TIN)
is a group of numbers and letters that
look like the example below. TIN is
located on the sidewall of the tire.
Glossary of Tire Terminology
Cold Tire Pressure – The tire air pressure when the vehicle has been
parked for at least three hours or driven less than 1 mile (1.6 km).
Load Rating – The maximum load that a tire is rated to carry for a given
inflation pressure.
Maximum Inflation Pressure – The maximum tire air pressure that the
tire can hold.
Maximum Load Rating – The load rating for a tire at the maximum
permissible inflation pressure for that tire.
Recommended Inflation Pressure – The cold tire inflation pressure
recommended by the manufacturer.
Treadwear Indicators (TWI) – The projections within the principal
grooves designed to give a visual indication of the degrees of wear of the
tread.
Tire size Tire
Identication
Number (TIN)
Maximum
tire load
Maximum
tire pressure
Tire size
DOT B97R FW6X 2209
DOT: This indicates that the tire meets all
requirements of the U.S. Department of
Transportation.
B97R: Manufacturer’s identication mark.
FW6X: Tire type code.
22 09: Date of manufacture.
Year
Week

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DOT Tire Quality Grading
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.
Uniform Tire Quality Grading
Quality grades can be found where applicable on the tire sidewall between tread
shoulder and maximum section width.
For example:
Treadwear 200
Traction AA
Temperature A
All passenger car tires must conform to Federal Safety Requirements in addition
to these grades.
TreadwearThe 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.
TractionThe 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.
WARNING: 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.
TemperatureThe 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 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.