Mercedes-Benz 2011 R-Class Operator's Manual page 307

Do not tighten the wheel bolts when the
vehicle is raised. Otherwise, the vehicle could
fall off the jack.
Wheel bolts for 18", 19" and 20" wheels
:
Wheel bolts for the "Minispare"
2
emergency spare wheel
! Always use wheel bolts ; to mount the
collapsible spare wheel. Using other wheel
bolts to mount the collapsible spare wheel
could damage the brake system.
G
Warning
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.
X
Clean the wheel and wheel hub contact
surfaces.
! To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
X
Slide the emergency spare wheel onto the
alignment bolt and push it on.
X
Tighten the wheel bolts until they are
finger-tight.
X
Unscrew the alignment bolt.
X
Tighten the last wheel bolt until it is finger-
tight.
X
Inflate the collapsible spare wheel
( Y page 305).
Inflating the collapsible spare tire
G
Warning!
Pump up the collapsible spare wheel before
lowering the vehicle. You could otherwise
damage the wheel rim.
G
Warning!
Comply with the manufacturer's safety
instructions on the sticker on the electric air
pump.
Your vehicle is equipped with one of two
electric air pumps:
Version 1: electric air pump with pressure
R
gauge on the air hose.
Version 2: electric air pump with
R
integrated pressure gauge.
The following description applies to both
versions. Differences in the way they are used
will be explained in detail.
Version 1
Flat tire
305
Z