Mercedes Benz 2008 c300 Manuale Utente

Pagina di 509
359
Operation
Tires and wheels
Uniform Tire Quality Grading Standards
A tire information system that provides 
consumers with ratings for a tire’s traction, 
temperature and treadwear. Ratings are 
determined by tire manufacturers using 
government testing procedures. The 
ratings are molded into the sidewall of the 
tire.
Vehicle maximum load on the tire
Load on an individual tire that is 
determined by distributing to each axle its 
share of the maximum loaded vehicle 
weight and dividing it by two.
Rotating tires
Tire rotation can be performed on vehicles 
with tires of the same dimension all 
around. If your vehicle is equipped with 
tires of the same dimension all around, 
tires can be rotated, observing a 
front-to-rear rotation pattern that will 
maintain the intended rotation (spinning) 
direction of the tire (
In some cases, such as when your vehicle 
is equipped with mixed-size tires (different 
tire dimension front vs. rear), tire rotation 
is not possible.
If applicable to your vehicle’s tire configu-
ration, tires can be rotated according to 
the tire manufacturer’s recommended in-
tervals in the tire manufacturer’s warranty 
pamphlet located in your vehicle literature 
portfolio. If none is available, tires should 
be rotated every 3000 to 6000 miles 
(5000 to 10000 km), or sooner if neces-
sary, according to the degree of tire wear. 
The same rotation (spinning) direction 
must be maintained (
Rotate tires before the characteristic tire 
wear pattern becomes visible (shoulder 
wear on front tires and tread center wear 
on rear tires).
Thoroughly clean the mounting face of 
wheels and brake disks, i.e. the inner side 
of the wheels/tires, during each rotation. 
Check for and ensure proper tire inflation 
pressure.
For information on wheel change, see the 
“Practical hints” section (
Warning!
G
Rotate front and rear wheels only if the tires 
are of the same dimension.
If your vehicle is equipped with mixed-size 
tires (different tire dimensions front vs. 
rear), tire rotation is not possible.
Warning!
G
Have the tightening torque checked after 
changing a wheel. Wheels could become 
loose if not tightened with a torque of 
96 lb-ft (130 Nm).
Only use genuine Mercedes-Benz wheel 
bolts specified for your vehicle’s rims.