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Checking and refilling levels
226Checking tyre pressure
The correct tyre pressure can be seen on the sticker on the
inside of the tank flap.1. Read the required tyre inflation 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.
2. The tyre pressures should only be checked when the tyres are cold. The slightly raised pressures of warm tyres must not be
reduced.
3. Adjust the tyre pressure to the load you are carrying.Tyre pressure
The correct tyre pressure is especially important at high speeds. The pressure
should therefore be checked at least once a month and before starting a
journey.
WARNING
A tyre can easily burst if the pressure is too low, causing an accident!•
At continuously high speeds, a tyre with insufficient pressure flexes
more. In this way it becomes too hot, and this can cause tread separation
and tyre blow-out. Always observ e the recommended tyre pressures.
•
If the tyre pressure is too low or too high, the tyres will wear prema-
turely and the vehicle will not h andle well. Risk of accident!For the sake of the environment
Under-inflated tyres will increase fuel consumption.
Tyre service life
The service life of tyres is dependent on tyre pressure, driving
style and fitting.
Fig. 168 Tyre tread wear
indicatorsFig. 169 Changing
wheels
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Checking and refilling levels227
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
Wear indicators
The original tyres on your vehicle have 1.6 mm high
⇒page 226, fig. 168
“tread wear indicators” running across the tread. Depending on the make,
there will be six to eight 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 226.
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 226, fig. 169 . 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.
•
If tyres show excessive wear, you should have the running gear checked
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.Puncture-proof tyres
Puncture-proof tyres will usually allow the vehicle to continue
even when one of the tyres has a puncture.Vehicles that are factory-fitted with puncture proof tyres
21)
indicate
on the instrument panel when there is a loss of tyre pressure.
21)According to the version and the country
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Checking and refilling levels231
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Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
WARNING
The maximum speed for the winter tyre s must not be exceeded. Otherwise,
this could lead to tyre damage and thus, an accident risk.
For the sake of the environment
Fit your summer tyres in good time. They are quieter, do not wear so quickly
and reduce fuel consumption.Snow chainsSnow chains may be fitted only to the front wheels, and only to certain tyre
sizes ⇒page 268.
Snow chains must have fine-pitch link s which do not protrude more that 9
mm, including tension device.
Remove wheel hub covers and trim rings before fitting snow chains. For safety
reasons cover caps, available in any Authorised Service Centre, must then be
fitted over the wheel bolts.
WARNING
Observe the fitting instructions provided by the snow chain manufacturer.
Caution
You must remove the snow chains to drive on roads which are free of snow.
Otherwise they will impair handling, damage the tyres and wear out very
quickly.
Note
In some countries, the speed limit for using snow chains is 50 km/h. The legal
requirements of the country should be followed.
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General notes on the technical data 265
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
Te c h n i c a l D a t aGeneral notes on the technical dataWhat you should be aware ofGeneral notes
All data in the official vehicle documents take precedence over this data.All data in these documents are valid for the basic model as offered in Spain.
The vehicle data card included in the inspection and maintenance schedule
in the vehicles registration documents show which engine is installed in the
vehicle. The figures may be different if addition
al equipment is fitted, for different
models, for special vehicles and for other countries.
Abbreviations used in this paragraph of the Technical Data Abbreviation MeaningkW Kilowatt, engine power measurement.
bhp Brake horse power, formerly used to denote engine power
at rpm Revolutions per minute - engine speed. Nm Newton metres, unit of engine torque.
l/100 km Fuel consumption in litres per 100 kilometres g/km Carbon dioxide emission s in grams per kilometre.
CO
2
Carbon dioxide
CN Cetane number, indication of the ignition quality of the diesel.
RON Research octane number, indication of the knock resistance of petrol.
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General notes on the technical data 267
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
How are the figures measured?Fuel consumption
The consumption and emission details shown on the vehi cle data sticker differ from one vehicle to another.Fuel consumption and CO
2 emissions for the vehicle can be checked on the
vehicle data sticker.
The fuel consumption and emissions figures given are based on the weight
category of the car, which is determined according to the engine/gearbox
combination and the equipment fitted. The consumption figures are calculated in accordance with the EC fuel
consumption test requirements 1999/
100/EC. These test requirements
specify a realistic test method based on normal everyday driving.
The following test conditions are the basis for the performance of the test:
Note
•
Actual consumption may vary from quoted test values, depending on
personal driving style, road and traffic conditions, the weather and the condi-
tion of the vehicle. Urban cycle
The urban cycle starts with an engine cold start. City driving is then simulated.
Extra urban cycle In the extra urban cycle the vehicle undergoes frequent acceleration
and braking in all gears, as in normal everyday driving. The
road speed ranges from 0 to 120 km/h.
Combined The average overall consumption is calculat
ed with a weighting of around 37% for the urban cycle and 63% for the extra urban
cycle.
CO2 emissions The exhaust gases are collected during both driving cycles to calculate carbon dioxide emissions. The gas composition is then
analysed to evaluate the CO
2 content and other emissions.
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