
Wheels and Tyres187
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
setting off on a long trip. Please do not forget the spare wheel when checking the tyres.
The tyre inflation pressures for summer tyres are indicated on the inside of the fuel filler flap ⇒page 186, fig. 154. The inflation pressures for winter tyres are 20 kPa (0.2 bar) higher than those for summer tyres ⇒page 189.
The tyre pressure should be at the highest pressure specified for your vehicle at all times.
Always check the inflation pressure of ty res when cold. Do not reduce the higher pressure of warm tyres. Adapt the inflation pressure of the tyres accordingly if your vehicle is carrying a significantly higher payload.
Driving style
Fast cornering, sharp acceleration and braking (squealing tyres) increase wear-and- tear on your tyres.
Balancing wheels
The wheels of a new vehicle are balanced. There are a wide range of influences when driving which may result in an im balance and which makes themselves felt through vibration in the steering.
You should have the wheels rebalanced since any imbalance increases wear-and- tear on the steering, the suspension and tyres. A wheel must also be rebalanced when a new tyre is fitted and each time a tyre is repaired.
Wheel alignment errors
Incorrect wheel alignment at the front and rear will not only increase wear-and-tear on the tyres but will also has an adverse effect on vehicle safety. Contact your specialist garage if you no tice any unusual tyre wear.
WARNING
•If the inflation pressure is too low, the tyre must perform a greater rolling resistance. At higher speeds the tyre will warm up as a result of this. This can result in tread separation and even a tyre blowout.
•Immediately replace the damaged rims or tyres.
For the sake of the environment
Tyres which are insufficiently inflated increase your fuel consumption.
Wear indicators
The base of the tread of the original tyres has wear indicators 1.6 mm high, installed at right angles to the direction of travel. These wear indicators are located at 6 - 8 points depending on the make and are evenly spaced around the circumference of the tyre ⇒fig. 155. Markings on the walls of the tyres through the letters “TWI”, triangular symbols or other symbols identi fy the position of the wear indicators.
A remaining tread of just 1.6 mm, measured in the grooves of the tread next to the wear indicators, means that your tyres have reached their legally permissible minimum tread depth.
WARNING
•You must have your tyres replaced with new ones at the latest when the wear indicators have been worn do wn. The legally permissible minimum tread depth should be observed.
•Worn tyres do not provide the necessary adhesion to the road surface at high speeds on wet roads. One could experience “aquaplaning” (uncon- trolled movements of the vehicle - “swimming” on a wet road surface).
Fig. 155 Tyre tread with wear indicators
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Breakdown assistance194
Vehicle tool kit
The vehicle tool kit and the lifting jack are stored in a locable plastic box in the spare wheel ⇒fig. 157. There is also space here for the removable ball for the trailer towing device.
The vehicle tool kit contains the following parts (depending on equipment fitted):
•Torx wrench,
•Wheel wrench,
•Hook for pulling off a full wheel trim,
•Towing eye,
•Adapter for the wheel bolts lock.
After using the lifting jack, screw in the arm of the lifting jack fully before placing it back in its stowage area.
WARNING
•The factory-supplied lifting jack is only intended for your model of vehicle. On no account attempt to lift a heavier vehicle or other loads - risk of injury!
•Ensure that the vehicle tool kit is safely attached in the luggage compartment.
Tyre repair kit*
The tyre repair kit is intended for the repair of minor tyre defects. The tyre repair kit contains a compressor, inflation bottle, operating instructions and accessories.
The repair with the tyre repair kit is not at all intended to replace a permanent re pair on the tyre, this repai r only s er v es to reach the next w orks hop. T he re pa ir can be undertaken on the vehicle immediately. Please read the attached instructions carefully before the repair.
The tyre repair kit is locate d in the luggage compartment.
Spare wheel*
The spare wheel is stowed in the spare wheel well in the luggage
compartment below the floor covering.
The spare wheel lies in a well under the luggage compartment floor and is fixed in place along with the vehicle tool kit box using special screws ⇒fig. 158.
One should check the inflation pressure in the spare wheel (at best when generally checking the tyre air pressures - see sign on the fuel filler flap ⇒page 170) to ensure that the spare wheel is always ready to use.
Unidirectional tyres*
If you have such tyres on your vehicle, please refer to the notes below:
Fig. 157 Luggage compartment: Storage compartment for vehicle too kit
Fig. 158 Luggage compartment: Spare wheel
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Breakdown assistance195
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
•The spare wheel provided with a car fitted with unidirectional tyres has different dimensions. The wheel is provided with a warning sticker.
•After fitting on the wheel, the warning stic ker must not be concealed (e.g. by the wheel trim).
•Do not drive with this spare wheel at more than 80 km/h - risk of accident. Avoid accelerating at full throttle, sharp braking and fast cornering.
•The inflation pressure for this spare wheel is identical to the inflation pressure of the standard tyres.
•Use this spare wheel only to reach the ne arest specialist garage as it is not intended for co ntinuous use.
Changing a wheel
Preliminary work
The following steps should be carried out before actually changing the
wheel.
– If it is necessary to change a wheel, park the vehicle as far away as
possible from the traffic flow. The place you choose should be level.
– Have all the occupants get out. While changing a wheel, the occu-
pants of the vehicle should not stan d on the road (e.g. behind a crash
barrier).
– Apply the handbrake firmly.
–Engage 1st gear or if your vehicle is fitted with an automatic gearbox,
position the selector lever into position P.
– If a trailer is coupled, uncouple it.
– Take the vehicle tool kit and the spare wheel ⇒page 194 out of the
luggage compartment.
WARNING
•If you find yourself in flowing traffic switch on the hazard warning lights system and place the warning triangle on the side of the road at the prescribed distance from your vehicle while observing all national legal provisions. In this way you are protecting not only yourself but also other road users.
•Never start the engine with the vehicle sitting on the raised jack - danger of suffering injury!
Caution
If you have to change a wheel on a slope first block the opposite wheel with a stone or similar object in order to secure th e vehicle from unexpectedly rolling away.
Note
Comply with the national legal regulations.
Changing a wheel
Always change a wheel on a level surface as far as possible.
– Take off the full wheel trim* ⇒page 196 or the caps ⇒page 197.
– In the case of light alloy wheels remove the wheel trim cap
⇒ page 197.
– Slacken the wheel bolts ⇒page 198.
– Jack up the vehicle until the wheel to be changed is clear of the ground
⇒ page 198.
– Unscrew the wheel bolts and place them on a clean surface (cloth,
paper etc.).
– Take off the wheel.
NKO A05F 20 MR08.book Page 195 Thursday, April 19, 2007 11:34 AM

Index238
Two-way radio systems . . . . . . . . . . . . . . . . . . . . . . 109
Tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Tyre inflation pressure
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Tyre repair kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Tyres
Winter tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
U
Underbody protection . . . . . . . . . . . . . . . . . . . . . . . 165
Unidirectional tyres . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Unlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Remote control . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
V
Vanity mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Vehicle tool kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
W
Warning lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Warning symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Warning triangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Washing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
with a high-pressure cleaner . . . . . . . . . . . . . . 162
Washing the vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 161
Washing vehicle by hand . . . . . . . . . . . . . . . . . . . . . 162
Wax treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Wheel
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Spare wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
slackening and tightening . . . . . . . . . . . . . . . . 198
Wheel bolts lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Wheel trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186, 196
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Windows
de-icing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Windscreen washer nozzles . . . . . . . . . . . . . . . . . . . . 52
Windscreen Wiper and Washer System
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Windshield washer fluid reservoir . . . . . . . . . . . . 185
Warning light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Windshield washer system . . . . . . . . . . . . . . . . . . . 185
Windshield wiper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Winter tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Wiper blades
Replacing the wiper blades . . . . . . . . . . . . . . . . . 53
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