wheel size MERCEDES-BENZ S CLASS 2005 User Guide

324 OperationTires and wheelsTIN (T
ire I
dentification N
umber)
Unique identifier which facilitates efforts
by tire manufacturers to notify purchasers
in recall situations or other safety matters
concerning tires and gives purchases the
means to easily identify such tires. The TIN
is comprised of “Manufacturer's identifica-
tion mark”, “Tire size”, “Tire type code”
and “Date of manufacture”.
Tire load rating
Numerical code associated with the
maximum load a tire can support.
Tire ply composition and material used
This indicates the number of plies or the
number of layers of rubber-coated fabric in
the tire tread and sidewall. Tire manufac-
turers also must indicate the ply materials
in the tire and sidewall, which include
steel, nylon, polyester, and others.Tire speed rating
Part of tire designation; indicates the
speed range for which a tire is approved.
Traction
Force exerted by the vehicle on the road
via the tires. The amount of grip provided.
Tread
The portion of a tire that comes into
contact with the road.
Treadwear indicators
Narrow bands, sometimes called
“wear bars” that show across the tread of
a tire when only
1/6in (1.6 mm) of tread
remains.Uniform Tire Quality Grading Standards
A tire information system that provides
consumers with ratings for a tire's traction,
temperature and treadwear. Ratings are
determined by tire manufacturers using
government testing procedures. The
ratings are molded into the sidewall of the
tire.
Vehicle capacity weight
Rated cargo and luggage load plus
68 kilograms (150 lbs) times the vehicle's
designated seating capacity.
Vehicle maximum load on the tire
Load on an individual tire that is
determined by distributing to each axle its
share of the maximum loaded vehicle
weight and dividing it by two.

325 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 a
front-to-rear rotation pattern that will
maintain the intended rotation (spinning)
direction of the tire (
page 299).
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 299).
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 398).
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.

327 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 to
exceed 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:


Use of 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
approved by Mercedes-Benz. Your
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.
iWhen driving with snow chains, you
may wish to deactivate the ESP
(page 83) before setting the vehicle
in motion. This will improve the
vehicle’s traction.
!Even on vehicles with all-wheel-drive
use snow chains on rear tires only.
Use of snow chains is not permissible
with tire sizes:

245/45 R18 100V XL (Extra Load)
M+S on 8
1/2 x 18 rims


245/45 R18 96H M+S on 8
1/2 x 18
rims


245/45 R18 100Y XL (Extra Load)
on 8
1/2 x 18 rims


245/45 R18 96Y on 8
1/2 x 18 rims


265/40 R18 101Y XL (Extra Load)


265/40 R18 97Y

381 Practical hints
Where will I find ...?
Spare wheel
Removing the spare wheel
Take out the vehicle tool kit tray2.

Loosen the luggage bowl3. To do so,
turn the luggage bowl counterclock-
wise.

Remove the spare wheel4.
Storing the spare wheel

Place spare wheel4in wheel well.

Secure the spare wheel. To do so, turn
the luggage bowl3 clockwise to its
stop.

Place vehicle tool kit tray2 in luggage
bowl.
Spare wheel S 430, S 500 and S 600
(except Sport Package*)
The spare wheel rim is mounted with a full
sized tire of the same type as on the vehi-
cle, and it is fully functional.However, that spare wheel rim is weight
optimized and has a limited service life of
12 000 miles (20 000 km) use before a
standard wheel rim must replace it.
In case of flat tire, you may temporarily use
the spare wheel.
Do not operate vehicle with more than one
spare wheel mounted.
For more information, see “Rims and tires”
(
page 422).
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
on level surface. Make sure the jack arm is
fully seated in the jack take-up bracket. Al-
ways lower the vehicle onto sufficient ca-
pacity jackstands before working under the
vehicle.
Warning!
G
Never operate the vehicle with more than
one spare wheel mounted.
The spare wheel rim is for temporary use
only. Use for over a total of 12 000 miles
(20 000 km) (aggregate of all uses) may
cause wheel rim failure leading to an acci-
dent and possible injuries.
The spare wheel should only be used tempo-
rarily and replaced with a regular road wheel
as quickly as possible.

423 Technical data
Rims and tires
Same size tires
S 430, S 430 4MATIC
S 500, S 500 4MATIC
(except Sport
Package* and except
Appearance Package*)
S 600 (except Sport Package* and
except Appearance Package*)
S 430, S 430 4MATIC, S 500,
S 500 4MATIC, S 600
(Appearance Package*)
Rims (light alloy)
71/2 J x17 H2
8 J x18 H2
1
1For use with snow chains contact an authorized Mercedes-Benz Center
8 J x18 H2
1
Wheel offset
1.81 in (46 mm)
1.73 in (44 mm)
1.73 in (44 mm)
Summer tires
(radial-ply tires)
-
245/45 R18 96Y
1
245/45 R18 96Y
1
All-season tires
(radial-ply tires)
225/55 R17 97H M+S
-
-
Winter tires
(radial-ply tires)
225/55 R17 97H M+S
245/45 R18 100V XL (Extra Load) M+S
1
or
245/45 R18 96H M+S
1
245/45 R18 100V XL (Extra Load) M+S
1
or
245/45 R18 96H M+S
1

425 Technical data
Rims and tires
Mixed size tires
S 430, S 500, S 600 (Sport Package*)
S 55 AMG
Front axle:
AMG light alloy rims
81/2J x 18 EH2
1
81/2J x 18 EH2
1
Wheel offset
1.73 in (44 mm)
1.73 in (44 mm)
Summer tires (radial-ply tires)
245/45 R18 100Y XL (Extra Load)
or
245/45 R18 96Y
245/45 R18 100Y XL (Extra Load)
Rear axle:
AMG light alloy rims
9 J x 18 EH2
1
9 J x 18 EH2
1
Wheel offset
1.73 in (44 mm)
1.73 in (44 mm)
Summer tires (radial-ply tires)
265/40 R18 101Y XL (Extra Load)
1
or
265/40 R18 97Y
1
1Must not be used with snow chains
265/40 R18 101Y XL (Extra Load)
1