Interchanging The Wheels; Labeling (Overview) - Mercedes-Benz 2011 E-Class Cabriolet Operator's Manual

Tire labeling
320
car tires must meet under Federal Motor
Vehicle Safety Standard No. 109. Grades B
and A represent higher levels of performance
on the laboratory test wheel than the
minimum required by law.

Interchanging the wheels

G
Warning
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.
G
Warning!
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.
The wear patterns on the front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires
in the center.
If your vehicle's tire configuration allows, you
can rotate the wheels according to the
intervals in the tire manufacturer's warranty
book in your vehicle documents. If no
warranty book is available, the tires should be
rotated every 3000 to 6000 miles
(5000 to 10000 km), or earlier if tire wear
requires. Do not change the direction of
wheel rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressures.
Information on changing a wheel and
mounting the spare wheel (
The following markings are on the tire in
addition to the tire name (sales designation)
and the manufacturer's name:
:
;
=
?
A
B
C
D
E
i
Y
page 289).
Tire labeling
Overview of tire labeling
Uniform Tire Quality Grading Standard
( Y page 324)
DOT, Tire Identification Number
( Y page 323)
Maximum tire load (
Maximum tire pressure (
Manufacturer
Y
Tire material ( page 324)
Tire size designation, load-bearing
capacity and speed index (
Load index ( Y page 323)
Tire name
Tire data is vehicle-specific and may
deviate from the data in the example.
Y page 318)
Y page 313)
Y page 321)