2023 SUBARU BRZ tire type

Tire Information
400Rim type designation
The industry of manufacturer’s
designation for a rim by style or
code.
 Rim width
Nominal distance between rim
flanges.
 Section width
The linear distance between the
exteriors of the sidewalls of an
inflated tire, excluding elevations
due to labeling, decoration, or
protective bands.
 Sidewall
That portion of a tire between the
tread and bead.
 Sidewall separation
The parting of the rubber compound
from the cord material in the
sidewall.
 Snow tire
A tire that attains a traction index
equal to or greater than 110,
compared to the ASTM E1136-93
Standard Reference Test Tire,
when using the snow traction test as described in ASTM F-1805-00,

Standard Test Method for Single
Wheel Driving Traction in a Straight
Line on Snow-and Ice-Covered
Surfaces, and that is marked with
an Alpine Symbol “ ” on at least
one sidewall.
 Test rim
The rim on which a tire is fitted for
testing, and it may be any rim listed
as appropriate for use with that tire.
 Tread
That portion of a tire that comes into
contact with the road.
 Tread rib
A tread section running
circumferentially around a tire.
 Tread separation
Pulling away of th e tread from the
tire carcass.
 Treadwear indicators (TWI)
The projections within the principal
grooves designed to give a visual
indication of the degrees of wear of
the tread. 
Vehicle capacity weight
The rated cargo and luggage load
plus 150 lbs (68 kg) times the
vehicle’s designated seating
capacity.
 Vehicle maximum load on the
tire
Load on an individual tire that is
determined by distributing to each
axle its share of the maximum
loaded vehicle weight and dividing
by two.
 Vehicle normal load on the tire
Load on an individual tire that is
determined by distributing to each
axle its share of the curb weight,
accessory weight, and normal occu-
pant weight (distributed in accor-
dance with Table 1 that is appended
to the end of this section) and
dividing by 2.
 Wheel-holding fixture
The fixture used to hold the wheel
and tire assembly securely during
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Uniform Tire Quality Grading Standards
405
Consumer Information and Reporting Safety Defects13
– CONTINUED –
on the vehicle. That weight may not
safely exceed the available cargo
and luggage load capacity calcu-
lated in Step 4.
13-3. Uniform Tire Quality Grading StandardsThis information i ndicates the rela-
tive performance of passenger car
tires in the area of treadwear, trac-
tion, and temperature resistance.
This is to aid the consumer in
making an informed choice in the
purchase of tires.
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
The quality grades apply to new
pneumatic tires for use on
passenger cars. However, they do
not apply to deep tread, winter type
snow tires, space-saver or tempo-
rary use spare tires, tires with
nominal rim diameters of 12 inches
or less, or to some limited produc-
tion tires. All passenger car tires must

conform to Federal Safety Require-
ments in addition to these grades.
■ TREADWEARThe treadwear grade is a compara-
tive 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.■ TRACTION AA, A, B, CThe 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
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Index
418Specifications .......................................................................P380
Speedometer........................................................................P127
SRS airbag (Supplemental Restraint System airbag) ..... P5, P60Monitors .............................................................................P87
Servicing ............................................................................P88
Warning light................................................... P70, P87, P135
Starting & stopping engine ...................................................P229
State emission testing (U.S. only) ........................................P227
Steering lock ........................................................................P232
Steering Responsive Headlight ..... .......................................P180
OFF indicator ...................................................................P150
OFF indicator light ...........................................................P150
ON/OFF setting .................................................... P150, P180
Warning light....................................................................P150
Steering wheel
Lock .................................................................................P232
Power ..............................................................................P242
Tilt/telescopic ...................................................................P195
Stopwatch ............................................................................P155
Storage compartment...........................................................P213
Summer tires ........................................................................P358
Sun visors ............................................................................P213
Supplemental Restraint System (S RS) ..................................P60
Supplemental Restraint System ai rbag (SRS) .......................P60
Curtain airbag ....................................................................P80
Side airbag ............................... .........................................P80
Synthetic leather upholstery .......... .......................................P336
TTachometer ......................................................................... P127
Temperature gauge ............................................................. P129
Temperature warning light
AT OIL TEMP ................................................................. P138
Tether (child restrain t system) ....................................... P55, P59
Tie-down hooks ................................................................... P320
Tilt/telescopic steering wheel ...... ........................................ P195
Tire ............................................................................ P358, P385 All season tires ............................................................... P358
Chains............................................................................. P297
Information ...................................................................... P394
Inspection ....................................................................... P360
Pressures and wear ........................................................ P361
Replacement................................................................... P365
Rotation .......................................................................... P364
Size and pressure ........ .......................................... ......... P385
Types .............................................................................. P358
Tire pressure monitoring system (TPMS)........P251, P315, P358
Screen ............................................................................ P254
Warning light ................................................................... P138
Tires and wheels ................................................................. P358
Tools.................................................................................... P302
Top tether anchorages .................................................. P55, P59
Towing ................................................................................. P320
All wheels on the ground ................................................ P324
Flat-bed truck .................................................................. P324
Hooks.............................................................................. P320
Tie-down hooks .............................................................. P320
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