Tread Depth - Opel Automobile Owner's Manual

170 Vehicle care
pressures are detected. In some
versions, the message is displayed in
abbreviated form.
For example, the following messages
can be displayed:
A graphic indicating the left rear tyre
is shown together with the current tyre
pressure; slight pressure deviation.
Reduce speed. Check tyre pressure
at next opportunity with an
appropriate gauge and correct if
necessary.
On the Colour-Info-Display, this
message will appear in yellow.
A graphic indicating the front left tyre
is shown together with the current tyre
pressure; significant pressure
deviation or direct pressure loss.
Steer out of the flow of traffic as
quickly as possible without
endangering other vehicles. Stop and
check the tyres. Mount the spare
wheel if necessary 3 175.
On the Colour-Info-Display, this
message will appear in red.
Acknowledgement of warnings 3 88,
3 91.
Vehicle messages 3 96.
If the tyre pressure is to be reduced or
increased, switch off the ignition. Tyre
pressures 3 169, 3 195.
External high-power radio equipment
could disrupt the tyre pressure
monitoring system.
The tyre pressure monitoring system
valve cores and sealing rings must be
replaced each time the tyres are
changed.

Tread depth

Check tread depth at regular
intervals.
Tyres should be replaced for safety
reasons at a tread depth of 2-3 mm
(4 mm for winter tyres).