Advertisement
D2.02
Tyres and rims
Checking the state of the tyres
Tyre replacement is recommend after 4 years of normal use. Frequent use in maximum load
conditions and at high temperatures may lead to premature deterioration.
Check the state of the tyres during the scheduled maintenance.
CAUTION
Pressure increases with increasing tyre temperature. Never reduce the tyre pressure if measured when the
tyres are hot.
Tyre overheating due to underinflation may seriously compromise handling and tyre integrity.
Do not inflate the tyres to a pressure other than the specified value, as this would render the tyre pressure
monitoring system useless.
After replacing one or more tyres, always calibrate the tyre pressure monitoring system by pressing the
button on the passenger compartment dome light panel.
Check the inflation pressure: pressure must be measured with cold tyres and must match the values
specified.
CAUTION
Always inspect any tyre damage very carefully to assess severity: damage may greatly reduce tyre life and
cause accidents.
Check the tyres to ensure that there are no signs of damage such as abrasion, cuts, cracks, bubbles etc.
Violent knocks against kerbs, holes or other obstacles and driving on poor road surfaces for extended
periods may cause tyre damage. This damage may not always be visible. Any foreign objects
penetrating the tyre in these conditions may cause structural damage that is only identifiable after
removing the tyre from the wheel.
CAUTION
If the same tyres have been fitted on the vehicle for over 3 years, check frequently and carefully for signs of
deterioration.
Do not monitor the pressure of a damaged tyre.
Tyres will deteriorate even if the vehicle is used rarely or kept stationary. Cracks in the rubber on the tread
and sidewalls, at times accompanied by blisters, are an indication of tyre deterioration.
CAUTION
Never fit a tyre with tread depth under the specified limit, even if only in a single localised area.
Check the tread depth: the minimum permissible value is 1.7 mm. This depth is identified by the tyre wear
indicators.
Check the wear over the entire tread; in the event of uneven tread wear, perform static and dynamic wheel
balancing.
Note that once Run Flat tyres have been fitted, the instrument panel must be reprogrammed when
refitting conventional tyres to prevent a warning message from being shown on the TFT display.
Replace any tyres that have been punctured and/or been inflated with the tyre inflation bottle included with
vehicle toolkit. For safety reasons, we do not recommend attempting to repair punctured tyres.
Advertisement
