wheel bolt torque MERCEDES-BENZ S550 2007 W221 Owner's Manual

529 Operation
Tires and wheels
Rotating tires
Tire rotation can be performed on vehicles
with tires of the same dimension all
around. If your vehicle is equipped with
tires of the same dimension all around,
tires can be rotated, observing a
front-to-rear rotation pattern that will
maintain the intended rotation (spinning)
direction of the tire (
page 503).
In some cases, such as when your vehicle
is equipped with mixed-size tires (different
tire dimension front vs. rear), tire rotation
is not possible.If applicable to your vehicle’s tire configu-
ration, tires can be rotated according to
the tire manufacturer’s recommended in-
tervals in the tire manufacturer’s warranty
pamphlet located in your vehicle literature
portfolio. If none is available, tires should
be rotated every 3 000 to 6 000 miles
(5 000 to 10 000 km), or sooner if neces-
sary, according to the degree of tire wear.
The same rotation (spinning) direction
must be maintained (
page 503).
Rotate tires before the characteristic tire
wear pattern becomes visible (shoulder
wear on front tires and tread center wear
on rear tires).
Thoroughly clean the mounting face of
wheels and brake disks, i.e. the inner side
of the wheels/tires, during each rotation.
Check for and ensure proper tire inflation
pressure.For information on wheel change, see the
“Practical hints” section (
page 629).
Warning!
G
Rotate front and rear wheels only if the tires
are of the same dimension.
If your vehicle is equipped with mixed-size
tires (different tire dimensions front vs.
rear), tire rotation is not possible.
Warning!
G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
110 lb-ft (150 Nm).
Only use Genuine Mercedes-Benz wheel
bolts specified for your vehicle’s rims.

633 Practical hints
Flat tire

Unscrew the alignment bolt, install the
last wheel bolt and tighten slightly.Lowering the vehicle

Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.

Remove the jack.
1 - 5 Wheel bolts

Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of
110 lb-ft (150 Nm).Before storing the jack, it should be fully
collapsed, with handle folded in (storage
position).

Store the jack and the other vehicle
tools in the designated storage space
underneath the trunk floor
(page 611).
Warning!
G
Only use Genuine equipment
Mercedes-Benz wheel bolts. Other wheel
bolts may come loose.
Do not tighten the wheel bolts when the ve-
hicle is raised. Otherwise the vehicle could
fall off the jack.
Warning!
G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).i
Do not activate the tire inflation pressure
monitor (
page 511) until the depressurized
tire has been removed from the trunk.

678 Technical termsTightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.
TIN
(T
ire I
dentification N
umber)
(
page 527)
Tire load rating
(page 528)
Tire ply composition and material used
(page 528)
Tire speed rating
(page 528)
Traction
(page 528)
Tread
(page 528)
Treadwear indicators
(page 528)UDF
(U
niversal D
isc F
ormat)
A universal file system for optical me-
dia allowing an operating system to
read, write and modify data stored on
optical media that was created by an-
other operating system.
Uniform Tire Quality Grading Standards
(
page 528)
Uphill driving assistant
While you are driving up a hill, this sys-
tem holds the vehicle in place for ap-
prox. one second after you have taken
your foot off the brake pedal.
Vehicle capacity weight
(page 528)
Vehicle level control
The ground clearance of the vehicle is
automatically controlled according to a
selected setting and speed. The driver
can choose manually within a range of
ground clearance, for example on very
rough roads. Vehicle maximum load on the tire
(
page 528)
VIN
(Vehicle I
dentification N
umber)
The number set by the manufacturer
and stamped on the body to uniquely
identify each vehicle produced.
Voice Control*
Voice control system for car phones,
portable cell phones and audio sys-
tems (radio, CD, etc.).

698 IndexTemperature
Outside temperature indicator 29
Setting interior temperature
(COMAND) 230
Tires 510
Tie-down hooks, Trunk 453
Tightening torque, Wheel bolts 633, 678
Tilt/sliding sunroof see Power tilt/sliding
sunroof
Time
Setting (COMAND) 213
TIN 527
Tire and Loading Information
Placard 504
Tire Identification Number see TIN
Tires 500
Advanced Tire Pressure Monitoring
System (Advanced TPMS)* 511
And Rims 655
And Wheels 500
Care and maintenance 501
Chains 531
Checking inflation pressure electroni-
cally with Advanced Tire Pressure
Monitoring System (Advanced
TPMS)* 511Checking inflation pressure electroni-
cally with Run Flat Indicator (Canada
only) 515
Cleaning 502
Cold tire inflation pressure 526
Direction of rotation 503
Driving instructions 482
Important notes on tire inflation
pressure 510
Inflation pressure 509
Information placard 504
Inspection 501
Load rating 519, 528
Load rating, Maximum 523, 527
Minispare wheel 613, 658
Ply composition and material
used 528
Problems under-/overinflation 509
Retreads 500
Rotating 529
Run Flat Indicator (Canada only) 515
Service life 501
Sizes 655
Snow 530
Speed rating 484, 520, 528
Storing 502Supplemental tire inflation pressure
information 489
Temperature 510, 525
Terminology 526
TPMS malfunction telltale 553
Traction 483, 528
Tread depth 502
Tread depth, Winter 530
Treadwear indicators 528
Vehicle maximum load on 528
Wear pattern 529
Winter 530
Tools 611
Top tether
Children in the vehicle 64
Tow-away alarm 76
Tow-away alarm (COMAND) 228
Towing eye bolt (vehicle tool kit) 611,
644
Towing the vehicle 642
Tow-start 639, 642
Traction 73, 483, 525, 528
Transmission see Automatic transmission
Traveling abroad 486
Tread 528
Tread depth, Tires 502