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 tyres20) indicate on the instrument panel when there is a loss of tyre pressure.

Driving on puncture-proof tyres (emergency use)
– Leave the ESP/TCS (electronic stabilisation programme) switched on, or switch on.
– Drive carefully and at moderate speed (80 km/h maximum).
– Avoid sharp turns and rapid manouevres.
– Avoid driving over obstacles (for example, kerbs) or potholes.
– If the ESP/TCS is frequently activated, check whether there is smoke coming from the tyres or a smell of rubber, or if the vehicle vibrates or rattles. If this is the case, stop the vehicle.

Puncture-proof tyres are marked on the tyre wall as follows: “DSST”, “Eufonia”, “RFT”, “ROF”, “RSC”, “SSR” or “ZP”.

The tyre walls of this type of tyre are reinforced. When the tyres lose air, the tyre walls keep the tyre up (emergency use).

Loss of air pressure in the tyre is shown on the instrument panel. The vehicle may still be driven for at least 80 km and, under ideal conditions (for example, no load) further.

The faulty tyre should be replaced as soon as possible. The tyre rim should be checked for damage at a specialised workshop and replaced as necessary.

We recommend you contact your Authorised Service Centre. If more than one tyre is being used under emergency conditions, this reduces the distance which can be travelled.

Starting driving in emergency conditions
When the loss in tyre pressure is displayed on the instrument panel, this implies that at least one tyre is being driven in emergency conditions .

End of emergency operation
Do not drive on if:

• smoke is coming from one of the tyres,
• there is a smell of rubber,
• the vehicle vibrates,
• there is a rattling noise.

WARNING

When driving in emergency conditions, the driving quality of the vehicle is considerably impaired.

• Drive carefully and at moderate speed (80 km/h maximum).
• Avoid sharp turns and rapid manoeuvres, and brake earlier than usual.
• Avoid driving over obstacles (for example, kerbs) or potholes.
• If one or more tyres is being driven in emergency conditions, the driving quality of the vehicle is impaired and there is a risk of accident.

Note
• Puncture-proof tyres do not “deflate” on losing pressure as they are supported by the tyre walls. Therefore defects in the tyre can not be deteced with a visual inspection.
• Snow chains must not be used on front tyres used in emergency conditions.