wheel torque MERCEDES-BENZ SL550 2007 R230 Owner's Manual

315 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 286).
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 286).
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 388) and
(
page 405).
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
96 lb-ft (130 Nm).
Only use genuine Mercedes-Benz wheel
bolts specified for your vehicle’s rims.

412 Practical hintsFlat tireLowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until the full weight of the
vehicle is resting on the ground.

Pull the jack out of the jack support
tube.
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 96 lb-ft
(130 Nm).

Before storing the jack in the trunk,
crank back to storage position and fold
in the arm.
Replacing jack support tube cover

Slide tongue of cover under the upper
edge of the tube opening.

Applying even pressure, press cover
until it snaps into place.
Be careful not to damage the locking
tabs or clamp the plastic retaining
strap.
i
The flat tire may be transported in the trunk
when the retractable hardtop is raised. If avail-
able, use a protective sheet on the spare wheel.
Vehicles with TPMS or Advanced TPMS*:
Do not activate the tire inflation pressure moni-
tor until a full size wheel/tire with functioning
sensor has been placed back into service on the
vehicle.
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
96 lb-ft (130 Nm).Warning!
G
When turning the wheel wrench to tighten
the wheel bolts, make sure you position
hands on the wrench in such a way that you
avoid injury to yourself, such as scraping
your hands against the wheel. Make sure
turning the wheel wrench will not scratch or
damage the wheel rim.
i
For information on storing the spare wheel
back into the trunk, see “Storing the spare wheel
after use” (
page 390).


469 Index
V
Vehicle
Locking 31
Locking in an emergency 393
Minimum distance (Parktronic*) 230
Towing 421
Unlocking 31
Unlocking in an emergency 391
Vehicle capacity weight 314
Vehicle care
Leather upholstery 329
Ornamental moldings 325
Upholstery 329
Wood trims 329
Vehicle Identification Number see VIN
Vehicle level
Changing 227
Setting 227
Vehicle level control (ABC) 225
Vehicle level control switch 32
Vehicle lighting
Checking 273
Vehicle loading terminology 312
Vehicle maximum load on the tire 314
Vehicle status messages 347
Vehicle tool kit 388VIN 431
Voice control system* 25
W
Warning sounds
Distance warning function* 224
Distronic* 216
Drivers seat belts 80
Parking brake 55
Warranty coverage 429
Washing the vehicle 324
Wear pattern (tires) 315
Wheel bolts
Tightening torque 412
Wheel change 405
Tightening torque 412
Wheel wrench 389
Wheels
Tires and wheels 283
Wind screen 204
Installing 204
Removing 205
Windows see Side windows
Windows, cleaning 326
Windshield
Cleaning wiper blades 326
Defogging 191Refilling washer fluid 282
Washer fluid 58, 282
Washer system 282
Windshield and headlamp washer
system 452
Windshield washer and headlamp cleaning
system 272, 273
Windshield washer fluid 58
Filler neck 282
Messages in display 387
Mixing ratio 452
Refilling 282
Windshield wipers 25, 57
Fast wiper speed 57
Intermittent wiping 57
Replacing wiper blades 403
Wiping with windshield washer
fluid 58
Winter driving
Snow chains 318
Tires 316
Winter driving instructions 266
Winter tires 316
Wood trims
Cleaning 329