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Advice
●
Adjust tyre pressures to the loads carried in
the vehicle.
●
After checking the pressure, always replace
the valve caps, and where applicable, ob-
serve the instructions given for adjusting the
tyre control system ››› page 177.
WARNING
If tyre pressures are too high or too low, the
tyre may deflate or burst suddenly while driv-
ing. This could result in a serious accident.
●
If the tyre pressure is too low, they could
overheat, resulting in tread detachment or
even burst tyres.
●
When driving at high speeds and/or fully
loaded, the tyre could suddenly overheat,
burst or be subject to tread detachment, with
the resultant loss of control of the vehicle.
●
Tyre pressures which are too high or too
low reduce the service life of the tyre, affect-
ing the vehicle's performance.
●
Tyre pressures should be checked regularly,
at least once a month and before long jour-
neys.
●
Adjust the pressures of all the tyres to the
vehicle load.
●
Never deflate excess pressure from hot
tyres.
CAUTION
●
Take care not to tilt the manometer when
placing it on the valve. Otherwise, the valve
may be damaged.
●
If tyre valves are not protected by caps, or if
the caps are not screwed on correctly, they
may become damaged. Check that the caps
are identical to the standard caps and have
been correctly tightened.
For the sake of the environment
Under-inflated tyres will increase fuel con-
sumption.
Note
When checking tyre pressures, please ob-
serve the instructions for the tyre control sys-
tem ››› page 177.
Tread depth and wear indicators
Fig. 176 Tyre tread: tread wear indicators
Tread depth
Certain driving conditions require a deeper
tread, as well as needing the tread to be ap-
proximately the same on the front and rear
tyres. This is particularly important when
driving in winter, in cold temperatures and on
wet roads ››› .
The minimum tread depth required by law in
the majority of cases is 1.6 mm (1/16 of an
inch), measured in the tread grooves next to
the tread wear indicators. Observe legal re-
quirements in each country.
The performance of winter tyres is much re-
duced when the tread has worn to 4 mm
(5/32 inch).
The tread depth of new tyres may vary, ac-
cording to the type and make of tyre and the
tread pattern.
236
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