Operation Manual

Driving and o peration 147
Tread dept h
Check tread depth regularly. Should the
front tyres show greater wear than the rear
tyres, have both front wheels excha ng ed
with the rear wheels so that the tyres w ith
de epe r tread are on the front ax le.
For information on how to change a wheel
- see page 174.
Check the tyre pres sures - se e p age 217.
For safety reasons, tyres should be
replaced when their tread depth has worn
down to 2 to 3 mm. The legal perm issible
minimum tread depth (1.6 mm) has been
reached when the tread has worn down a s
far as one of the wear indicators.
A number of wear indicators are sp aced at
equal intervals a round the tyre, within the
tread. Their position is indicated by
markings on the tyre sidewall.
General inform ation
Note that the d anger of aquapla ning is
greater if the tyres are worn and if the tyre
pressures are not correct.
Tyre s age, ev en if they are used only ve ry
little or not at all. A spa re wheel which has
not been used for six years should be used
with care.
Never fit used tyres the previous history
and use of which you do not know.