The tires that came on your vehicle
have a number of markings. Those
you should be aware of are described
below.
Tire SizeWhenever tires are replaced, they
should be replaced with tires of the
same size. Below is an example of
tire size with an explanation of what
each component means.P235/55R18 99V
P －Vehicle type (P indicates
passenger vehicle).
235 －Tire width in millimeters.
55 －Aspect ratio (the tire's
section height as a
percentage of its width).
R －Tire construction code (R
indicates radial).
18 －Rim diameter in inches.
99 －Load index (a numerical
code associated with the
maximum load the tire can
carry).
V －Speed symbol (an
alphabetical code indicating
the maximum speed rating).
Tire Identification Number (TIN)The tire identification number (TIN)
is a group of numbers and letters that
look like the following example. TIN
is located on the sidewall of the tire.
DOT B97R FW6X 2202
DOT －This indicates that the tire
meets all requirements of
the U.S. Department of
Transportation.
B97R －Manufacturer's
identification mark.
FW6X －Tire type code.
TIRE LABELING EXAMPLE
(1)
(1)
(2)
(3)
(4)
(1) Tire Size
(2) Tire Identification Number (TIN)
(3) Maximum Tire Pressure
(4) Maximum Tire Load
2202 －
year
week Date of manufacture.
Tire Labeling48411/06/16 17:42:51 12 ACURA RDX MMC North America Owner's M 50 31STK650 enu
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 －Means 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 －Means 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) －
Means the projections within the
principal grooves designed to give a
visual indication of the degrees of
wear of the tread. Tire Pressure Monitoring System
(TPMS)
－Required Federal
Explanation
Each tire, including the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recommended
by the vehicle manufacturer on the
vehicle placard or tire inflation
pressure label.
(If your vehicle has tires of a different
size than the size indicated on the
vehicle placard or tire inflation
pressure label, you should determine
the proper tire inflation pressure for
those tires.) As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS)
that illuminates a low tire pressure
telltale
when one or more of your tires is
significantly under-inflated
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them to
the proper pressure.
CONTINUED
Tire Labeling, Tire Pressure Monitoring System (TPMS)
－Required Federal Explanation
485
Technical Information
11/06/16 17:42:51 12 ACURA RDX MMC North America Owner's M 50 31STK650 enu
