Mercedes-benz M-Class 2006 Owners Manual User Manual download pdf (Page 338)

337

Operation

Tires and wheels

Tread depth

Do not allow your tires to wear down too

far. Adhesion properties on wet roads are

sharply reduced at tread depths under

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 approx-

imately

1

/

16

in (1.6 mm), at which point

the tire is considered worn and should be

replaced.

Recommended minimum tire tread depth:

앫 Summer tires

1

/

8

in (3 mm)

앫 Winter tires

1

/

6

in (4 mm)

1 TWI (T

read Wear Indicator)

The treadwear indicator appears as a solid

band across the tread.

Storing tires

Cleaning tires

Warning! G

Although the applicable federal motor safety

laws consider a tire to be worn when the

treadwear indicators (TWI) become visible at

approximately

1

/

16

in (1.6 mm), we recom-

mend 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 re-

duced.

Depending upon the weather and/or road

surface (conditions), the tire traction varies

widely.

!

Keep unmounted tires in a cool, dry

place with as little exposure to light as

possible. Protect tires from contact

with oil, grease and gasoline.

!

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.

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