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Care And Maintenance; Direction Of Rotation, Spinning; Inspection; Rotation - Smart Fortwo coupe Operator's Manual

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Table of Contents
Tires and wheels
134
For more information on tire load rating
(
page 138).
Y
For information on calculating total and
cargo load capacities (
Direction of rotation
Unidirectional tires offer added
advantages, such as better hydroplaning
performance. To benefit, however, you must
make sure the tires rotate in the direction
specified.
An arrow on the sidewall indicates the
intended direction of rotation (spinning)
of the tire.
Tire care and maintenance
G
WARNING
Regularly check the tires for damage.
Damaged tires can cause tire inflation
pressure loss. As a result, you could lose
control of your vehicle.
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
Check the tire inflation pressure at least
once a month. For more information on
checking tire inflation pressure, see
"Recommended tire inflation pressure"
(
page 125).
Y
Tire inspection
Every time you check the tire inflation
pressure, you should also inspect your
tires for the following
excessive treadwear (
R
cord or fabric showing through the tire's
R
rubber
bumps, bulges, cuts, cracks or splits in
R
the tread or side of the tire
Replace the tire if you find any of the above
conditions.
Life of tire
G
Tires should be replaced after 6 years,
page 132).
Y
regardless of the remaining tread.
The service life of a tire is dependent upon
varying factors including but not limited
to
R
R
R
Tread depth
G
Although the applicable federal motor
vehicle safety laws consider a tire to be
worn when the treadwear indicators (TWI)
become visible at approximately
(1.6 mm), we recommend that you do not allow
your tires to wear down to that level. As
tread depth approaches
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
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
point the tire is considered worn and
page 134)
Y
should be replaced.
Recommended minimum tire tread depth:
Summer tires
Winter tires
WARNING
driving style
tire inflation pressure
distance driven
WARNING
1
/
1
/
in (3 mm).
8
1
/
in (1.6 mm), at which
16
1
/
in (3 mm)
8
1
/
in (4 mm)
6
1
/
in
16
in (3 mm), the
8

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