251
Operation
Tyres and wheels
Only correct the tyre pressures when the
tyres are cold.
The pressures of warm tyres should only
be corrected if the yare too low for the cur-
rent operat ing condi tions. Warm tyres al-
ways have higher tyre pressures than cold
tyres.
You will find a table oftyre pressures for
va rious operating conditions on the inside
of the veh icle's fuel filler flap. i
Tyre pressure values given for low loads are
mi nimum value swhich offer you good ride com-
fort charact eristics.
You can, however, also usethe value sfor higher
lo ads. These are permissible and do not adverse-
ly aff ect the running of thevehicle. However, ride
co mfort will be impaired to som edegree.
Als ocheck thet yre pressure of thespare
wheel*.
Ty re pressure changes by approximately
0. 1b ar for every 10 °C change in ambient
temperature. If you measure the tyre pres-
sures indoors where the temperature dif-
fers from the outside temperature, you will
have to correct the measured values ac-
cor dingly.
When the vehicle isdriven, the tyre tem-
perature, and wi thit the tyre pressure, in-
crease as a function of the road speed and
the load on the tyres. During the journey, the tyre pressure loss
warning system monitors the set tyre pres-
sure by comparing the speed of rotation of
the
wheels. This enables the system to de-
tect whether there has been a significant
drop in tyre pressure in one of the tyres. If
the rotation speed of a wheel changes be-
cause of a drop in tyre pressure, a corre-
sponding warning message appears in the
multi -function display. Tyre pr
essure G
Risk of accident If the press
urein a tyre drops repeatedly:
! inspect the tyre for foreign objects
! check whether the wheel or valve is
leaking H
Environmental note Ch
eck the tyre pressures regularly, at least
every 14days. Tyre pressure loss war
ning system 209en_d2.boo Seite
251 Dienstag, 25. Mai 2004 7:26 19