2004 MERCEDES-BENZ CLK55AMG COUPE tire size

ContentsTechnical data.................................. 375
Spare parts service ............................ 376
Warranty coverage ............................. 377
Loss of Service and Warranty
Information Booklet...................... 377
Identification labels............................ 378
Layout of poly-V-belt drive ................. 379
CLK 320/CLK 500/CLK 55 AMG . 379
Engine ................................................ 380
Rims and tires .................................... 381
Same size tires ............................. 382
Mixed size tires ............................ 383
Minispare wheel ........................... 384
Electrical system................................ 385
Main dimensions................................ 386
Weights .............................................. 387Fuels, coolants, lubricants, etc. ......... 388
Capacities .................................... 388
Engine oils.................................... 390
Engine oil additives ...................... 390
Air conditioning refrigerant .......... 390
Brake fluid .................................... 390
Premium unleaded gasoline ......... 391
Fuel requirements ........................ 391
Gasoline additives ........................ 391
Coolants....................................... 392
Windshield washer system and
headlamp cleaning system* ......... 394
Consumer information ....................... 395
Uniform tire quality grading ......... 395
Technical terms............................... 397Index................................................. 403

79 Safety and Security
Driving safety systems
For more information, see “Practical hints”
(page 305).Switching off the ESP
To improve the vehicle's traction, turn off
the ESP in driving situations where it would
be advantageous to have the drive wheels
spin and thus cut into surfaces for better
grip such as:


starting out on slippery surfaces and in
deep snow in conjunction with snow
chains


sand or gravel
The switch is located on the center con-
sole.
Warning!
G
The ESP cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase the traction afforded. The ESP
cannot prevent accidents, including those
resulting from excessive speed in turns or
hydroplaning. Only a safe, attentive, and
skillful driver can prevent accidents. The ca-
pabilities of an ESP equipped vehicle must
never be exploited in a reckless or danger-
ous manner which could jeopardize the us-
er’s safety or the safety of others.iDistronic* is switched off when ESP is
activated.
!Because of the ESP’s automatic opera-
tion, the engine must be shut off
(SmartKey in starter switch position0
or1 or KEYLESS-GO* start/stop but-
ton in position0 or1) when

the parking brake is being tested on
a brake test dynamometer


the vehicle is being towed with the
front axle raised
Active braking action through the ESP
may otherwise seriously damage the
brake system.
The ESP will only function properly if
you use wheels of the recommended
tire size.
Warning!
G
The ESP should not be switched off during
normal driving other than in the circum-
stances described below. Disabling of the
system will reduce vehicle stability in stan-
dard driving maneuvers.

290 OperationTires and wheels
Tires and wheelsSee your authorized Mercedes-Benz
Center for information on tested and rec-
ommended rims and tires for summer and
winter operation. They can also offer ad-
vice concerning tire service and purchase.Retreaded tires are not tested or recom-
mended by Mercedes-Benz, since previous
damage cannot always be recognized on
retreads. Mercedes-Benz can therefore
not assure the operating safety of the vehi-
cle when such tires are used.Warning!
G
Replace rims or tires with the same designa-
tion, manufacturer and type as shown on the
original part. See your authorized
Mercedes-Benz Center for further informa-
tion. If incorrectly sized rims and tires are
mounted:

The wheel brakes or suspension compo-
nents can be damaged.


The correct operating clearance of the
wheels and tires is no longer guaran-
teed.
Warning!
G
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
When replacing rims, only use genuine
Mercedes-Benz wheel bolts specified for the
particular rim type. Failure to do so can re-
sult in the bolts loosening and possibly an
accident.

291 Operation
Tires and wheels
Important guidelines

Only use sets of tires and rims of the
same type and make.


Tires must be of the correct size for the
rim.


Break in new tires for approximately
60 miles (100 km) at moderate
speeds.


Regularly check the tires and rims for
damage. Dented or bend rims can
cause tire pressure loss and damage
the tire beads.


If vehicle is heavily loaded, check tire
pressure and correct as required.


Do not allow your tires to wear down
too far. Adhesion properties on wet
roads are sharply reduced at tread
depths under
1/8in (3 mm).


When replacing individual tires, you
should mount new tires on the front
wheels first (on vehicles with
same-sized wheels all around).
Life of tires
The service life of a tire is dependent upon
various factors including but not limited to:

Driving style


Tire pressure


Distance driven
Direction of rotation
Unidirectional tires offer added advantag-
es, such as better hydroplaning perfor-
mance. To benefit, however, you must
make sure the tires rotate in the direction
specified.
An arrow on the sidewall indicates the in-
tended direction of tire rotation.
Warning!
G
Tires and spare tire should be replaced after
six years, regardless of the remaining tread.!Keep unmounted tires in a cool, dry
place with as little exposure to light as
possible. Protect tires from contact
with oil, grease and gasoline.

293 Operation
Tires and wheels
Rotating wheels
On vehicles with the same wheel size all
around, wheels can be rotated every 3 000
to 6 000 miles (5 000 to 10 000 km), or
sooner if necessary, according to the de-
gree of tire wear. The same direction of tire
rotation must be retained.
Rotate the wheels before the characteris-
tic tire wear pattern becomes visible
(shoulder wear on front wheels and tread
center wear on rear wheels).
Thoroughly clean the inner side of the
wheels after each rotation. Check and en-
sure proper tire inflation pressure.Warning!
G
Rotate front and rear wheels only if they are
of the same size.
Warning!
G
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
80 lb-ft (110 Nm).
Only use genuine Mercedes-Benz wheel
bolts specified for your vehicle's rims.

295 Operation
Winter driving
Block heater*
(Canada only)
The engine is equipped with a block heat-
er.
The electrical cable may be installed at
your authorized Mercedes-Benz Center.
Snow chains
Snow chains should only be driven on
snow-covered roads at speeds not to ex-
ceed 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.


Snow chains should only be used on
the rear wheels. Follow the manufac-
turer's mounting instructions.


Only use snow chains that are ap-
proved by Mercedes-Benz. Your autho-
rized 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.
iWhen driving with snow chains, you
may wish to deactivate the ESP
(page 79) before setting the vehicle
in motion. This will improve the vehi-
cle‘s traction.
!Use of snow chains is not permissible
with tire sizes:

225/50 R16 92H


245/40 R17 91W


245/40 R17 91Y


T 125/80 R17 99M


T 125/90 R 16 98M

382 Technical dataRims and tiresSame size tires
16" tires
17" tires
CLK 320
CLK 500
CLK 320 (Appearance Package*)
CLK 55 AMG
Rims (light alloy)
7J x 16 H2
-
-
Wheel offset
1.45 in (37 mm)
-
-
Winter tires (radial-ply
tires)
205/55 R16 91H M+S
-
-
CLK 320
CLK 320 (Appearance Package*)
CLK 500
CLK 55 AMG
Rims (light alloy)
71/2 J x 17 H2
71/2 J x 17 H2
71/2 Jx17H2
Wheel offset
1.42 in (36 mm)
1.45 in (37 mm)
1.45 in (37 mm)
Winter tires (radial-ply
tires)
225/45 R 17 91 H M+S
1
225/45 R 17 91 H M+S
1
225 / 45 R17 91 H M+S
1
1Must not be used with snow chains.

383 Technical data
Rims and tires
Mixed size tires
CLK 320
CLK 320*
CLK 320 (Appearance Package*)
CLK 500
CLK 55 AMG
Front axle:Rims (light alloy)
7 J x 16 H2
71/2 J x 17 H2
71/2 J x 17 H2
Wheel offset
1.45 in (37 mm)
1.42 in (36 mm)
1.45 in (37 mm)
Summer tires
(radial-ply tires)
-
225/45 R17 91W
225/45 R17 91Y
All-season tires
(radial-ply tires)
205/55 R16 91H M+S
-
-
Rear axle:Rims (light alloy)
8 J x 16 H2
81/2 J x17 H2
81/2 J x17 H2
Wheel offset
1.26 in (32 mm)
1.18 in (30 mm)
1.18 in (30 mm)
Summer tires (radial-ply
tires)
-
245/40 R17 91W
1
1Must not be used with snow chains.
245/40 R17 91Y
1
All-season tires
(radial-ply tires)
225/50 R16 92H M+S
1
-
-