Mercedes-Benz SL 2016 Operator's Manual page 272

Changing a wheel
270
G
WARNING
If you tighten the wheel bolts or wheel nuts
when the vehicle is raised, the jack could tip
over. There is a risk of injury.
Only tighten the wheel bolts or wheel nuts
when the vehicle is on the ground.
Always pay attention to the instructions and
safety notes in the "Changing a wheel" sec-
tion ( page 266).
Y
Only use wheel bolts that have been designed
for the wheel and the vehicle. For safety rea-
sons, Mercedes-Benz recommends that you
only use wheel bolts which have been
approved for Mercedes-Benz vehicles and the
respective wheel.
! Mercedes-AMG vehicles: during
removal and repositioning of the wheel, the
wheel rim can strike the ceramic-brake disc
and damage it. Therefore, you should pro-
ceed carefully and get a second person
assist to you. Alternatively, you can use a
second alignment bolt.
! To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
Clean the wheel and wheel hub contact
X
surfaces.
Slide the wheel to be mounted onto the
X
alignment bolt and push it on.
Tighten the wheel bolts until they are fin-
X
ger-tight.
Unscrew the alignment bolt.
X
Tighten the last wheel bolt until it is finger-
X
tight.
Lowering the vehicle
G
WARNING
The wheels could work loose if the wheel nuts
and bolts are not tightened to the specified
tightening torque. There is a risk of accident.
Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel is changed.
Turn the crank of the jack counter-clock-
X
wise until the vehicle is once again standing
firmly on the ground.
Place the jack to one side.
X
Tighten the wheel bolts evenly in a cross-
X
wise pattern in the sequence indicated (:
to A). The specified tightening torque is
96 lb-ft (130 Nm).
Turn the jack back to its initial position.
X
Stow the jack and the rest of the vehicle
X
tools in the trunk again.
Mercedes-AMG vehicles and vehicles
X
with AMG equipment: insert the cover
into the outer sill.
Check the tire pressure of the newly moun-
X
ted wheel and adjust it if necessary.
Observe the recommended tire pressure
( page 249).
Y
When you are driving with the emergency
i
spare wheel mounted, the tire pressure