
Wheels and tyres237
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Wheels and tyresWheelsGeneral notesAvoiding damage
– If you have to drive over a kerb or similar obstacle, drive very
slowly and at a right angle.
– Keep grease, oil and fuel off the tyres.
– Inspect the tyres regularly for da mage (cuts, cracks or blisters,
etc.). Remove any foreign objects embedded in the treads.
Storing tyres
– When you remove the tyres, mark them in order to maintain the same direction of rotation when they are installed again.
– When removed, the wheels and/or tyres should be stored in a cool, dry and preferably dark location.
– Store tyres in a vertical position if they are not fitted on wheel
rims.New tyres
New tyres must be run in ⇒ page 193.
The tread depth of new tyres may vary, according to the type and make of tyre
and the tread pattern. Concealed damage
Damage to tyres and rims is often not readily visible. If you notice unusual
vibrations or the vehicle pulling to one side, this may indicate that one of the
tyres is damaged. The tyres should be checked immediately by an Authorised
Service Centre.
Tyres with directional tread pattern
An arrow on the tyre sidewall indicates the direction of rotation on tyres with
directional tread. Always observe the direction of rotation indicated when
fitting the wheel. This guarantees optimum grip and helps to avoid aqua-
planing, excessive noise and wear.
WARNING
•New tyres do not have maximum grip during the first 500 km. Drive
particularly carefully to avoid possible accidents.•Never drive with damaged tyres. This may cause an accident.•If you notice unusual vibrations or if the vehicle pulls to one side when
driving, stop the vehicle immediately and check the tyres for damage.
Checking tyre pressure
The correct tyre pressure can be seen on the sticker on the
inside of the tank flap.1. Read the required tyre inflatio n pressure from the sticker. The
values refer to Summer tyres. For Winter tyres, you must add 0.2
bar to the values given on the sticker.
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Wheels and tyres
240Wear indicators
The original tyres on your vehicle have 1.6 mm high tread wear indicators
⇒ page 239, fig. 152 , running across the tread. Depending on the make,
there will be 6 to 8 of them evenly spaced around the tyre. Markings on the
tyre sidewall (for instance the letters “TWI” or other symbols) indicate the
positions of the tread wear indicators. The minimum tread depth required by
law is 1.6 mm (measured in the tread grooves next to the tread wear indica-
tors). Worn tyres must be replaced. Different figures may apply in export
countries ⇒.
Tyre pressure
Incorrect tyre pressure causes premature wear and could cause tyre blow-out.
For this reason, the tyre pressure should be checked at least once per month
⇒ page 237.
Driving style
Fast cornering, heavy acceleration and hard braking all increase tyre wear.
Changing wheels around
If the front tyres are worn considerably more than the rear ones it is advisable
to change them around as shown ⇒page 239, fig. 153. All the tyres will then
last for about the same time.
Wheel balance
The wheels on new vehicles are balanced. However, various factors encoun-
tered in normal driving can cause them to become unbalanced, which results
in steering vibration.
Unbalanced wheels should be rebalanced, as they otherwise cause excessive
wear on steering, suspension and tyres. A wheel must also be rebalanced
when a new tyre is fitted.
Incorrect wheel alignment
Incorrect wheel alignment causes excessive tyre wear, impairing the safety of
the vehicle. If tyres show excessive wear, you should have the wheel align-
ment checked by an Authorised Service Centre.
WARNING
There is a serious danger of accidents if a tyre bursts during driving!•The tyres must be replaced at the latest when the tread is worn down to
the tread wear indicators. Failure to do so could result in an accident. Worn
tyres do not grip well at high speeds on wet roads. There is also a greater
risk of aquaplaning.•At continuously high speeds, a tyre with insufficient pressure flexes
more. This causes it to overheat. This can cause tread separation and tyre
blow-out. Risk of accident. Always observe the recommended tyre pres-
sures.•I f t y r e s s h o w e x ce s s i v e w e a r, y o u s h o u l d h a v e t h e r u n n i n g g e a r ch e cke d
by an Authorised Service Centre.•Keep chemicals such as oil, fuel and brake fluid away from tyres.•Damaged wheels and tyres must be replaced immediately!For the sake of the environment
Under-inflated tyres will increase fuel consumption.Run-flat tyres
Run-flat tyres allow you to continue driving even with a punc-
tured tyre, in the majority of cases.In vehicles that are factory-fitted with run-flat tyres
25) the loss of tyre
pressure is indicated on the instrument panel.
25)Depending upon version and country.
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Wheels and tyres243
Safety First
Operating Instructions
Practical Tips
Technical Specifications
Wheel bolts
Wheel bolts must be tightened to the correct torque.The design of wheel bolts is matched to the rims. If different wheel rims are
fitted, the correct wheel bolts with the right length and correctly shaped bolt
heads must be used. This ensures that wheels are fitted securely and that the
brake system functions correctly.
In certain circumstances, you should not use wheel bolts from a different
vehicle, even if it is the same model ⇒page 212.
After the wheels have been changed, the tightening torque of the wheel bolts
s ho uld b e ch ecke d as so on as possi ble wi th a to rq ue wre nch. ⇒ The tight-
ening torque for steel and alloy wheels is 120 Nm.
WARNING
If the wheel bolts are not tightened correctly, the wheel could become
loose while driving. Risk of accident.•The wheel bolts must be clean and turn easily. Never apply grease or oil
to them.•Use only wheel bolts which belong to the wheel.•If the torque of the wheel bolts is too low, they could loosen whilst the
vehicle is in motion. Risk of accident! If the tightening torque is too high,
the wheel bolts and threads can be damaged.Caution
The prescribed tightening torque for wheel bolts for steel and alloy wheels is
120 Nm.
Winter tyres
Winter tyres will improve the vehicles handling on snow and
ice.In winter conditions winter tyres will considerably improve the vehicle’s
handling. The design of summer tyre s (width, rubber compound, tread
pattern) gives less grip on ice and snow.
Winter tyres must be inflated to a pressure 0.2 bar higher than the pressures
specified for summer tyres (see sticker on tank flap).
Winter tyres must be fitted on all four wheels.
Information on permitted winter tyre sizes can be found in the vehicle’s regis-
tration documents. Use only radial winter tyres. All tyre sizes listed in the
vehicle documentation also apply to winter tyres.
Winter tyres lose their effectiveness when the tread is worn down to a depth
of 4 mm.
The speed rating code ⇒page 242, “New tyres and wheels” determines the
following speed limits for winter tyres: ⇒
Q max. 160 km/h
S max. 180 km/h
T max. 190 km/h
H max. 210 km/h
In some countries, vehicles which can exceed the speed rating of the fitted
tyre must have an appropriate sticker in the driver’s field of view. These
stickers are available from your Authorised Service Centre. The legal require-
ments of each country must be followed.
Do not have winter tyres fitted for unnecessarily long periods. Vehicles with
summer tyres handle better when the roads are free of snow and ice.
If you have a flat tyre, please refer to the notes on the spare wheel
⇒ page 242, “New tyres and wheels”.
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Index
300Oil properties . . . . . . . . . . . . . . . . . . . . . . . . 225
Specifications . . . . . . . . . . . . . . . . . . . . . . . 224
Topping up . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Engine oil dipstick . . . . . . . . . . . . . . . . . . . . . . . 225
Engine oil pressure Warning lamp . . . . . . . . . . . . . . . . . . . . . 66, 87
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 Environmental friendliness . . . . . . . . . . . . 197
Environmental tip Avoiding pollution . . . . . . . . . . . . . . . . . . . . 215
Environmentally friendly driving . . . . . . . . . . . 195
ESP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88, 187 See also Electronic Stability Programme . . 161
Example of menu use Program a speed limit warning . . . . . . . . . . 69
To activate and deactivate the speed limit warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Example of the use of the menus Open the Configuration menu with the MFI lever68
Open the Configuration menu with the steering wheel controls . . . . . . . . . . . . . . . . . . . . . . 69
Examples of menu use Open the main menu . . . . . . . . . . . . . . . . . . 68
Open the winter tyres menu . . . . . . . . . . . . . 69
To close the winter tyres menu . . . . . . . . . . . 69
Exhaust gas purification system . . . . . . . . . . . 194
Exterior mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 206
FFabric trim cleaning . . . . . . . . . . . . . . . . . . . . . 210
Fastening rings . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Fire extinguisher . . . . . . . . . . . . . . . . . . . . . . . . 145
First aid kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Flexible service interval display . . . . . . . . . . . . . 62
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Fog lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Fog lights with cornering function . . . . . . . . . . 122
Fold down the backrest . . . . . . . . . . . . . . . . . . 140
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Description . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Front drink holders . . . . . . . . . . . . . . . . . . . . . . 142
Front interior light Switching off . . . . . . . . . . . . . . . . . . . . . . . . 125
Switching on . . . . . . . . . . . . . . . . . . . . . . . . 125
Front passenger airbag deactivation . . . . . . . . . 44
Front reading lights . . . . . . . . . . . . . . . . . . . . . . 126
Front seat adjustment Lumbar support . . . . . . . . . . . . . . . . . . . . . . 138
Fuel Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Fuel level Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Fuel reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Warning message . . . . . . . . . . . . . . . . . . . . . 67 Fuel Tank
Opening the fuel tank flap . . . . . . . . . . . . . 214
Fuel tank See Fuel reserve . . . . . . . . . . . . . . . . . . . . . . 82
Fuel: save . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
GG 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Gear shift pattern . . . . . . . . . . . . . . . . . . . . . . . 170
General overview of the engine compartment 277
Glove compartment . . . . . . . . . . . . . . . . . . . . . 141
Glow plug system . . . . . . . . . . . . . . . . . . . . . . . 164 Warning lamp . . . . . . . . . . . . . . . . . . . . . . . . 83
GRA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181HHandbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176 Warning lamp . . . . . . . . . . . . . . . . . . . . 86, 176
Hazard warning lights . . . . . . . . . . . . . . . . . . . . 122
HBA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Head restraints Adjusting . . . . . . . . . . . . . . . . . . . . . . . 136, 137
Adjustment of the head restraint angle . . . 137
Removing . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Headlight flashers . . . . . . . . . . . . . . . . . . . . . . . 124
Headlight range control . . . . . . . . . . . . . . . . . . 121
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