Opel Automobile Owner's Manual page 125

On some versions, the wheel
cover is removed together with
the wheel bolts.
For wheel covers with visible
wheel bolts, the cover can remain
on the wheel. The retaining rings
at the wheel bolts must not be
removed.
Alloy wheels: Disengage wheel
bolt caps with a screwdriver and
remove. To protect the wheel,
place a soft cloth between the
screwdriver and the alloy wheel.
Alloy wheels with anti-theft lock:
unscrew the wheel bolt cap with
anti-theft key and remove. Vehicle
tools 3 118.
Vehicle care
2. Install the wheel wrench ensuring
that it locates securely and
slacken each bolt by half a turn.
3. Ensure the jack is positioned
correctly with the vehicle jacking
points.
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