2007 MERCEDES-BENZ CLK550 COUPE winter tires

341 Operation
Winter driving
Winter driving
Before the onset of winter, have your
vehicle winterized at an authorized
Mercedes-Benz Center. This service
includes:

Check of anticorrosion and antifreeze
concentration.

Addition of cleaning concentrate to the
water of the windshield and headlamp
cleaning system. Add MB Concentrate
“MB SummerFit” to a premixed wind-
shield washer solvent/antifreeze
which is formulated for temperatures
below freezing point (
page 455).

Battery test. Battery capacity drops
with decreasing ambient temperature.
A well charged battery helps to make
sure that the engine can be started
even at low ambient temperatures.

Tire change.
Winter tires
Always use winter tires at temperatures
below 45°F (7°C) and whenever wintry
road conditions prevail. Not all M+S rated
tires provide special winter performance.
Make sure the tires you use show the
mountain/snowflake.marking on the
tire sidewall. These tires meet specific
snow traction performance requirements
of the Rubber Manufacturers Association
(RMA) and The Rubber Association of Can-
ada (RAC) and have been designed specif-
ically for use in snow conditions. Use of
winter tires is the only way to achieve the
maximum effectiveness of the ABS and the
ESP
® in winter operation.
For safe handling, make sure that all
mounted winter tires are of the same make
and have the same tread design.Always observe the speed rating of the
winter tires installed on your vehicle. If the
maximum speed for which your tires are
rated is below the speed rating of your ve-
hicle, you must place a notice to this effect
where it will be seen by the driver. Such no-
tices are available at your tire dealer or any
authorized Mercedes-Benz Center.
Warning!G
Winter tires with a tread depth under 1/6in
(4 mm) must be replaced. They are no
longer suitable for winter operation.

342 Operation
Winter driving
Block heater (Canada only)
The engine is equipped with a block
heater.
The electrical cable may be installed at an
authorized Mercedes-Benz Center.
Snow chains
Snow chains should only be driven on
snow-covered roads at speeds not higher
than 30 mph (50 km/h). Remove chains
as soon as possible when driving on roads
without snow.
Please observe the following guidelines
when using snow chains:

Using snow chains is not permissible
with all wheel/tire combinations
(
page 442).

Use snow chains in pairs and on rear
wheels only. Follow the manufacturer's
mounting instructions.

Only use snow chains that are
approved by Mercedes-Benz. Any
authorized Mercedes-Benz Center will
be glad to advise you on this subject.

Use of snow chains may be prohibited
depending on location. Always check
local and state laws before installing
snow chains.

Do not use snow chains on the
Minispare wheel (
page 445).
Warning!G
If you use your spare tire when winter tires
are fitted on the other wheels, be aware that
the difference in tire characteristics may
very well impair turning stability and that
overall driving stability may be reduced.
Adapt your driving style accordingly.
Have the spare tire replaced with a winter
tire at the nearest authorized
Mercedes-Benz Center.!Some tire sizes do not leave adequate clear-
ance for snow chains. To help avoid serious dam-
age to your vehicle or tires, make sure that the
use of snow chains is permissible as specified in
the "Technical data" section of this Operator’s
Manual, see “Rims and tires” (
page 442).
!If snow chains are mounted to the front
wheels, they may scrape against the body or axle
components. The tires or the vehicle could be
damaged as a result.
iWhen driving with snow chains, you may
wish to deactivate the ESP® (page 92) before
setting the vehicle in motion. This will improve
the vehicle‘s traction.

442 Technical data
Rims and tires
!Only use tires which have been tested and
approved for your vehicle by Mercedes-Benz.
Tires approved by Mercedes-Benz are developed
to provide best possible performance in conjunc-
tion with the driving safety systems on your vehi-
cle such as ABS or ESP
®. Tires specially
developed for your vehicle and tested and ap-
proved by Mercedes-Benz can be identified by
finding the following on the tire’s sidewall:

MO = Mercedes-Benz Original equipment
tires

MOE = Mercedes-Benz Original Extended
(tires with limited run-flat characteristics)
original equipment tires. Using tires other
than those approved by Mercedes-Benz may
result in damage that is not covered by the
Mercedes-Benz Limited Warranty.
iFor information on driving with MOExtended
tires, see “MOExtended system*” (
page 326).
!Using tires other than those approved by
Mercedes-Benz can have detrimental effects,
such as

poor handling characteristics

increased noise

increased fuel consumption
Moreover, tires and rims not approved by
Mercedes-Benz may, under load, exhibit dimen-
sional variations and different tire deformation
characteristics that could cause them to come
into contact with the vehicle body or axle parts.
Damage to the tires or the vehicle may be the
result.
iFurther information on tires and rims is
available at any authorized Mercedes-Benz Cen-
ter. A placard with the recommended tire infla-
tion pressures is located on the driver’s door
B-pillar. Some vehicles may have supplemental
tire inflation pressure information for driving at
high speeds (
page 322) or for vehicle loads
less than the maximum loaded vehicle condition
(
page 321).If such information is provided, it can be found
on the placard located on the inside of the fuel
filler flap. The tire inflation pressure should be
checked regularly and should only be adjusted
on cold tires. Follow tire manufacturer’s mainte-
nance recommendation included with vehicle.
iThe following pages also list the approved
wheel rim and tire sizes for equipping your vehi-
cles with winter tires. Winter tires are not avail-
able as standard or optional factory equipment,
but can be purchased from an authorized
Mercedes-Benz Center.
Depending on vehicle model and the standard or
optional factory-equipped wheel rim/tire config-
uration on your vehicle (Appearance Package,
Sport Package etc.), equipping your vehicle with
winter tires approved for your vehicle model may
also require the purchase of two or four wheel
rims of the recommended size for use with these
winter tires. See an authorized Mercedes-Benz
Center for more information.

443 Technical data
Rims and tires
Same size tires
ModelCLK 350CLK 550
Rims (light alloy)7.5 J x 17 H27.5 J x 17 H2
Wheel offset1.42 in (36 mm)1.45 in (37 mm)
Winter tires1,3
1Radial-ply tires.
225/45 R17 91 H M+S.225/45 R17 91 H M+S.
Winter tires1,2,3
2Must be used in conjunction with Run Flat Indicator* only. 3Not available as factory equipment.
225/45 R17 91 H M+S.MOExtended225/45 R17 91 H M+S.MOExtended

475 Index
Tire inflation pressure
see the placard on the fuel filler flap
Tires 313, 442
Air pressure 337
Care and maintenance 314
Chains 342
Cleaning 315
Direction of rotation, Spinning 316
Driving instructions 296
Important notes,
Tire inflation pressure 322
Inflation pressure 305, 321, 323
Inflation pressure,
Information placard 321
Inspection 314
Load rating 339
MOExtended system* 420
MOExtended* 326, 442
Ply composition
and material used 339
Problems under-/overinflated 326
Retreads 313
Rims and tires 442
Rotation 340
Run Flat Indicator 324
Service life 314Sizes 443
Snow 341
Spare wheel 397, 416, 445
Speed rating 298, 330, 339
Storing 315
Temperature 322, 336
Terminology 337
Tire Identification Number see TIN
Traction 297, 339
Tread 339
Tread depth 315, 341
Treadwear indicators 339
Wear pattern 340
Winter 341
Tools 394
Top tether
Children in the vehicle 84
Tether attachment points 84
Towing eye bolt 394, 429, 430
Towing the vehicle 427
Tow-start 425, 427
Traction 92, 297, 339
Transmission see Automatic transmission
Traveling abroad 300
Tread 339
Tread depth 315, 341Treadwear indicators 339
Trip computer 163
Trip odometer 139
Trunk
Closing from inside 111
Fuse box 434
Lamp 137
Lid 109
Lock button, KEYLESS-GO* 106
Opening 109
Opening, from inside 110
Tie-down rings 267
Trunk lid 111
Trunk lid emergency release 116
Unlocking in an emergency 400
Unlocking/opening,
KEYLESS-GO* 107
Unlocking/opening,
SmartKey 101
Valet locking 117

477 Index
Vehicle loading
Cargo tie-down rings 267
Instructions 266, 316
Load limit 316
Roof rack* 261
Split rear bench seat 264
Terminology 337
Vehicle maximum load on the tire 339
Vehicle recovery services,
Stolen (Tele Aid) 285
Vehicle status message memory 149
Vehicle status messages 368
Vehicle system settings,
Control system 141
Vehicle tool kit 394
Vehicle washing 346
VIN 438, 439W
Warning indicators
Parktronic system*
(Canada only) 259
Warning sounds
Driver’s or passenger’s seat belt 77
Parking brake 54
Parktronic system*
(Canada only) 259, 260
Seat belt telltale 363, 364
Warranty coverage 10, 437
Washer fluid see Windshield washer fluid
Washer reservoir level 449
Washing the vehicle 346
Wear pattern, Tires 340
Weights, Vehicle 447
Wheel
Bolts 398
Change 416
Collapsible wheel chock 394
Removing 418
Spare 416
Tightening torque 419
Wrench 394
Wheels, Sizes 443
Wheels, Tires and 313Window curtain air bags 70
Windows see Power windows
Windshield
Cleaning 57, 351
Defogging 190, 200
Windshield washer fluid 312, 455
Message in display 393
Mixing ratio 455
Refilling 312
Reservoir level 449
Wiping 57
Windshield washer system 449, 455
Windshield wipers 56
Cleaning wiper blades 351
Replacing wiper blades 413
Winter driving 341
Block heater (Canada only) 342
Snow chains 342
Tires 341
Winter driving instructions 299
Winter tires 341
Wood trims, cleaning 354