2004 SUBARU IMPREZA WRX tire type

11 -5 1
Maintenance and service
– CONTINUED –
placing all four tires at the same time.
NOTE
Unidirectional tires: Some tires have a specified
direction of rotation. A tire of this type has an ar-
row or other mark on its side wall to indicate the
direction of rotation. Install it so that the direction
of rotation is correct when the vehicle is drivenforward.
"All four tires must be the same in terms of
manufacturer, brand (tread pattern), construc-
tion, degree of wear, speed symbol, load index and size. Mixing tires of different types, sizes or
degrees of wear can result in damage to vehi-
cle’s power train. Use of different types or sizes
of tires can also dangerously reduce controlla-
bility and braking performance and can lead to
an accident."
Use only radial tires. Do not use radial tires
together with belted bias tires and/or bias-ply
tires. Doing so can dangerously reduce control-
lability, resulting in an accident.
! Wheel replacement
When replacing wheels due, for example, to damage,
make sure the replacement wheels match the specifi-
cations of the wheels that are fitted as standard equip-
ment. Replacement wheels are available from SUBA-
RU dealers.
Use only those wheels that are specified for
your vehicle. Wheels not meeting specifica-
tions could interfere with brake caliper opera-
tion and may cause the tires to rub against the
wheel well housing during turns. The resulting
loss of vehicle control could lead to an acci-
HGB062BA

13-2
Consumer information and Reporting safety defects
Consumer information and Reporting safety defectsFor U.S.A.
The following information has been compiled accord-
ing to Code of Federal Regulations “Title 49, Part
575”. Uniform tire quality grading stan-
dards
This information indicates the relative performance of
passenger car tires in the area of treadwear, traction,
and temperature resistance. This is to aid the consum-
er in making an informed choice in the purchase oftires.
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
temporary use spare tires, tires with nominal rim diam-
eters of 12 inches or less, or to some limited produc- tion tires.
All passenger car tires must confirm to Federal Safety
Requirements in addition to these grades. !
Treadwear
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 prac-
tices and differences in road characteristics and cli-mate. ! Traction AA, A, B, C
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 traction grade assigned to this tire is based

14-8
Index
Safety tips
................................................................. 1-13
Warning light and chime ...........................1-15, 3-19
Seatbelts ......................................................................... 1-13
Security system ............................................................ 2-14
Selector lever ................................................................ 7-22
Position indicator ................................................... 3-26
Semi-automatic climate control system .............4-11
Shift lock release ......................................................... 7-26
Side ventilators ............................................................. 4-3
Snow tires ....................................................................... 8-14
Sounding a panic alarm ............................................ 2-9
Spark plugs .................................................................... 11-26
Specifications ................................................................ 12-2
Speedometer .......................................................... 3-7, 3-15
SRS airbag (Supplemental Restraint
System airbag) ....................................................... 6, 1-52
SRS airbag system warning light ..........................3-20
SRS frontal airbag ....................................................... 1-56
SRS side airbag ........................................................... 1-64
Starting the engine ...................................................... 7-9
State emission testing (U.S. only) ........................7-7
Stopping the engine ................................................... 7-11
Storage compartments .............................................. 6-5
Sun visors ....................................................................... 6-4
Sun shades .................................................................... 2-33
Supplemental Restraint System airbag (SRS) 1-52
Synthetic leather upholstery ...................................10-6T
Tachometer
............................................................. 3-9, 3-16
Temperature gauge .......................................... 3-10, 3-17
Temporary spare tire .................................................. 9-3
Tie-down hooks ............................................................. 9-18
Tilt steering wheel ........................................................ 3-49
Tire Chains ......................................................................... 8-16
Inspection .................................................................. 11-45
Pressures and wear .............................................. 11-45
Replacement ............................................................ 11-50
Rotation ...................................................................... 11-50
Tires ................................................................................... 12-5
Types .......................................................................... 11-44
Tires and wheels .......................................................... 11-44
Top tether anchorages ............................................... 1-46
Towing .............................................................................. 9-17
All wheels on the ground ....................................9-21
Flat-bed truck ........................................................... 9-20
Trailer
Hitch ............................................................................. 8-25
Hitches ........................................................................ 8-34
Towing ........................................................................ 8-29
Towing tips ................................................................ 8-37
Trunk lid ............................................................................ 2-25
Release handle ....................................................... 2-26
Trunk light ........................................................................ 11-78