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Treadwear indicators
Narrow bars (tread wear bars) that are distrib-
uted over the tire tread. If the tire tread is level
with the bars, the wear limit of รก in (1.6 mm)
has been reached.
Occupant distribution
The distribution of occupants in a vehicle at
their designated seating positions.
Total load limit
Nominal load and luggage load plus 68 kg
(150 lbs) multiplied by the number of seats in
the vehicle.
Changing a wheel
Flat tire
The "Breakdown assistance" section
(Y page 278) contains information and notes
on how to deal with a flat tire. Information on
driving with MOExtended tires in the event of a
flat tire can be found under "MOExtended tires
(tires with run-flat characteristics"
(Y page 278).
Rotating the wheels
G
WARNING
Rotating the front and rear wheels if the
wheels or tires have different dimensions
may severely impair the driving characteris-
tics. The service brake or wheel suspension
components may also be damaged. There is
a risk of an accident.
Rotate front and rear wheels only if the
wheels and tires are of the same dimen-
sions.
!
On vehicles equipped with a tire pressure
monitor, electronic components are located
in the wheel.
Tire-mounting tools should not be used near
the valve. This could damage the electronic
components.
Only have tires changed at a qualified spe-
cialist workshop.
Always pay attention to the instructions and
safety notes when changing a wheel
(Y page 313).
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 shoulder and rear tires in
the center.
On vehicles that have the same size front and
rear wheels, you can rotate the wheels accord-
ing 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 3,000 to 6,000 miles (5,000 to
10,000 km). Depending on tire wear, this may
be required earlier. Do not change the direc-
tion of wheel rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressure and reacti-
vate the tire pressure monitor if necessary.
Direction of rotation
Tires with a specified direction of rotation have
additional benefits, e.g. if there is a risk of
hydroplaning. These advantages can only be
gained if the tires are installed corresponding
to the direction of rotation.
An arrow on the sidewall of the tire indicates
its correct direction of rotation.
Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the tires
from oil, grease, gasoline and diesel.
Mounting a wheel
Preparing the vehicle
X
Stop the vehicle on solid, non-slippery and
level ground.
X
Unload the vehicle. The jack can only be
used when the vehicle is unladen.
X
Apply the electric parking brake manually.
X
Bring the front wheels into the straight-
ahead position.
Changing a wheel
313
Wheels and tires
Z
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