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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.
Observe the instructions and safety notes in the
"Changing a wheel" section (Y page 310).
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.
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 direction
of wheel rotation.
Clean the contact surfaces of the wheel and the
brake disc thoroughly every time a wheel is rota-
ted. Check the tire pressure and, if necessary,
restart the tire pressure loss warning system
(Canada only) or the tire pressure monitor (USA
only).
Direction of rotation
Tires with a specified direction of rotation have
additional benefits, e.g. if there is a risk of hydro-
planing. 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
Apply the electric parking brake manually.
X
Bring the front wheels into the straight-ahead
position.
X
Shift the transmission to position j.
X
Switch off the engine.
X
Vehicles without KEYLESS-GO: remove the
SmartKey from the ignition lock.
X
Vehicles with KEYLESS-GO start-function
or KEYLESS-GO: open the driver's door.
The vehicle electronics are now in position
u. This is the same as “key removed”.
X
Vehicles with KEYLESS-GO start-function
or KEYLESS-GO: remove the Start/Stop but-
ton from the ignition lock (Y page 123).
X
Make sure that the engine cannot be started
via your smartphone (Y page 83).
X
If included in the vehicle equipment, remove
the tire-change tool kit from the vehicle.
X
Safeguard the vehicle against rolling away
(Y page 142).
i
Apart from certain country-specific varia-
tions, the vehicles are not equipped with a
tire-change tool kit. Some tools for changing a
wheel are specific to the vehicle. For more
information on which tools are required to
perform a wheel change on your vehicle, con-
sult a qualified specialist workshop.
Necessary tire-changing tools can include, for
example:
R
Jack
R
Wheel chock
R
Lug wrench
Changing a wheel
311
Wheels and tires
Z
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