Subaru 2005 Impreza - Manual (Page 433)

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Maintenance and service
When a tire’s tread wear indicator becomes vis-
ible, the tire is worn beyond the acceptable limit
and must be replaced immediately. With a tire
in this condition, driving at high speeds in wet
weather can cause the vehicle to hydroplane.
The resulting loss of vehicle control can lead to
an accident.
NOTE
For safety, inspect tire tread regularly and replace
the tires before their tread wear indicators become
visible.
„ Tire rotation
Tire wear varies from wheel to wheel. To maximize the
life of each tire and ensure that the tires wear uniform-
ly, it is best to rotate the tires every 7,500 miles
(12,500 km). Rotating the tires involves switching the
front and rear tires on the right hand side of the vehicle
and similarly switching the front and rear tires on the
left hand side of the vehicle. (Each tire must be kept on
its original side of the vehicle.)
Replace any damaged or unevenly worn tire at the
time of rotation. After tire rotation, adjust the tire pres-
sures and make sure the wheel nuts are correctly
tightened.
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