Mercedes-Benz A-Class Operator's Manual page 414

412 Wheels and tires
Screw alignment bolt 1 instead of the
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wheel bolt into the threading.
Unscrew the remaining wheel bolts fully.
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Remove the wheel and if necessary stow it in
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the cargo compartment.
Notes on removing an emergency spare
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wheel: ( page 414).
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Install the new wheel ( page 412).
→
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Mounting a new wheel
Requirements:
The wheel is removed ( page 411).
R →
& WARNING Risk of accident from losing a
wheel
Oiled, greased or damaged wheel bolt/wheel
nut threads or wheel hub/wheel mounting
bolt threads can cause the wheel bolts/
wheel nuts to come loose.
As a result, you could lose a wheel while driv‐
ing.
Never oil or grease the threads.
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In the event of damage to the threads,
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contact a qualified specialist workshop
immediately.
Have the damaged wheel bolts or dam‐
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aged hub threads replaced.
Do not continue driving.
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Observe the information on the choice of
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tires ( page 405).
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For tires with a specified direction of rotation, an
arrow on the side wall of the tire indicates the
correct direction of rotation. Observe the direc‐
tion of rotation when installing.
Slide the wheel to be mounted onto the
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alignment bolt and push it on.
Notes on installing an emergency spare
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wheel: ( page 414).
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& WARNING Risk of injury from tightening
wheel bolts and nuts
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip.
Only tighten wheel bolts or wheel nuts
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when the vehicle is on the ground.
Be sure to observe the instructions and
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safety notes on "Changing a wheel"
( page 405).
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For safety reasons, only use wheel bolts
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which have been approved by Mercedes-
Benz and for the wheel in question.