Opel ASTRA 2014 Owner's Manual page 272

270 Vehicle care
Set the jack to the necessary
height. Position it directly below
the jacking point in a manner that
prevents it from slipping.
Attach jack handle and with the
jack correctly aligned rotate
handle until wheel is clear of the
ground.
Sports Tourer, jack variant 2,
3 257:
Set the jack to the necessary
height. Position it directly below
the jacking point in a manner that
prevents it from slipping.
Attach wheel wrench and with the
jack correctly aligned rotate wheel
wrench until wheel is clear of the
ground.
5. Unscrew the wheel nuts.
6. Change the wheel. Spare wheel
3 271.
7. Screw on the wheel nuts.
8. Lower the vehicle and remove
jack.
9. Install the wheel wrench ensuring
that it locates securely and tighten
each nut in a crosswise
sequence. Tightening torque is
140 Nm.