Tread Depth - Opel Zafira Tourer Owner's Manual

250 Vehicle care
3. Press MENU on the turn signal
lever to select the Vehicle
Information Menu in the Driver
Information Centre.
4. Turn the adjuster wheel to scroll to
the tyre pressure menu.
5. Press SET/CLR to begin the
sensor matching process. A
message requesting acceptance
of the process should display.
6. Press SET/CLR again to confirm
the selection. The horn sounds
twice to signal the receiver is in
relearn mode.
7. Start with the left side front wheel.
8. Place the relearn tool against the
tyre sidewall, near the valve stem.
Then press the button to activate
the TPMS sensor. A horn chirp
confirms that the sensor
identification code has been
matched to this wheel position.
9. Proceed to the right side front
wheel, and repeat the procedure
in Step 8.
10. Proceed to the right side rear
wheel, and repeat the procedure
in Step 8.
11. Proceed to the left side rear
wheel, and repeat the procedure
in Step 8. The horn sounds twice
to indicate the sensor
identification code has been
matched to the left side rear tyre,
and the TPMS sensor matching
process is no longer active.
12. Turn off the ignition.
13. Set all four tyres to the
recommended air pressure level
as indicated on the tyre pressure
label.
14. Ensure the tyre loading status is
set according selected pressure
3 116.
Temperature dependency
The tyre pressure depends on the
temperature of the tyre. During
driving, tyre temperature and
pressure increase. Tyre pressure
values provided on the tyre
information label and tyre pressure
chart are valid for cold tyres, which
means at 20 °C. The pressure
increases by nearly 10 kPa for a
10 °C temperature increase. This
must be considered when warm tyres
are checked.
The tyre pressure value displayed in
the Driver Information Centre shows
the real tyre pressure. A cooled down
tyre will show a decreased value,
which does not indicate an air leak.

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).
For safety reasons, it is
recommended that the tread depth of
the tyres on one axle should not vary
by more than 2 mm.