Opel ASTRA Owner's Manual page 247

The floor cover can be placed on the
projecting wheel.
Vehicles equipped with a temporary
spare wheel:
Secure a damaged full size wheel
facing upwards with the wing nut in
the spare wheel well after exchanging
the thread bolt by an extension bolt,
placed in the tool bag 3 228. To
replace the bolt:
1. Install the hexagon key of the
wheel wrench ensuring that it
locates securely on the bolt.
2. Turn the wheel wrench
anticlockwise to loosen the bolt.
Remove the bolt.
3. Take the extension bolt from the
tool bag 3 228 and screw it in
hand-tight using the hexagon key
of the wheel wrench.
4. Store the tool box and the
damaged wheel with the side
facing upwards, in the spare
wheel well and secure it by turning
the wing nut clockwise on the bolt.
The floor cover can be placed on the
projecting wheel.
Replace the extension bolt with the
short bolt before placing the
temporary spare wheel in the well
after renewing or repairing the
defective wheel.
Stowing the spare wheel back in
the well after replacing the
damaged wheel
1. Open the floor cover, loosen and
remove wing nut.
Only 3-door hatchback: open floor
cover, remove rear storage,
loosen and remove wing nut and
conus.
Vehicle care
2. Only 4-door notchback with
temporary spare wheel: replace
the extension bolt with the short
bolt by using the hexagon key of
the wheel wrench.
3. Place the tools in the tool box or
the tool bag 3 228.
4. Place spare wheel facing
upwards, in the wheel well and
secure by tightening the wing nut.
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