Subaru 2002 IMPREZA Service Manual page 1944

WHEEL AND TIRE SYSTEM
2. Tire
A: INSPECTION
1) Take stone, glass, nail etc. off the tread groove.
2) Replace the tire:
CAUTION:
• When replacing a tire, make sure to use only
the same size, construction and load range as
originally installed.
• Avoid mixing radial, belted bias or bias tires
on the vehicle.
(1) When large crack on the side wall, damage
or crack on tread is found.
(2) When the "tread wear indicator" appears as
a solid band across the tread.
(1) Tread wear indicator
(2) Tire tread
1. TIRE ROTATION
If tires are maintained at the same positions for a
long period of time, uneven wear results. There-
fore, they should be periodically rotated.
This lengthens service life of tires.
CAUTION:
When rotating the tires, replace unevenly worn
or damaged tires with new ones.
TIRE
S4M0377A
B4M1765
WT-4