Operation Manual

Check the tire inflation pressure at least
once a month. For more information on
checking tire inflation pressure, see
“Recommended tire inflation pressure”
(Y page 127).
Tire inspection
Every time you check the tire inflation
pressure, you should also inspect your
tires for the following
R
excessive treadwear (Y page 136)
R
cord or fabric showing through the tire’s
rubber
R
bumps, bulges, cuts, cracks or splits in
the tread or side of the tire
Replace the tire if you find any of the above
conditions.
Life of tire
G
Warning!
Tires should be replaced after 6 years,
regardless of the remaining tread.
The service life of a tire is dependent upon
varying factors including but not limited
to
R
driving style
R
tire inflation pressure
R
distance driven
Tread depth
G
Warning!
Although the applicable federal motor
vehicle safety laws consider a tire to be
worn when the treadwear indicators (TWI)
become visible at approximately
1
/
16
in
(1.6 mm), we recommend that you do not allow
your tires to wear down to that level. As
tread depth approaches
1
/
8
in (3 mm), the
adhesion properties on a wet road are
sharply reduced.
Depending upon the weather and/or road
surface (conditions), the tire traction
varies widely.
Do not allow your tires to wear down too far.
Adhesion properties on wet roads are
sharply reduced at tread depths of less
than
1
/
8
in (3 mm).
Treadwear indicators (TWI) are required by
law. These indicators are located in six
places on the tread circumference and
become visible at a tread depth of
approximately
1
/
16
in (1.6 mm), at which
point the tire is considered worn and
should be replaced.
Recommended minimum tire tread depth:
Summer tires
1
/
8
in (3 mm)
Winter tires
1
/
6
in (4 mm)
Treadwear indicator : appears as a solid
band across the tread.
Storing tires
!
Keep unmounted tires in a cool, dry
place with as little exposure to light as
possible. Protect tires from contact with
oil, grease and fuels.
Cleaning tires
!
Never use a round nozzle to power wash
tires. The intense jet of water can result
in damage to the tire.
Always replace a damaged tire.
136
Tires and wheels
>> Operation.
BA 451 USA, CA Edition A 2011; 1; 4, en-US
hereepe Version: 3.0.3.6
2010-05-11T15:12:26+02:00 - Seite 136