Thanks Andy for the help. I have a pretty good hydraulic jack on wheels so will use that.
I bought a torque wrench and decided to practice on one bolt. I had to stand on the spanner to loosen the nut. When I then used the torque wrench (set to 110nm as per BMW instructions) to tighten it back up I found although the wheel was tight I could undo it by hand using a spanner without having to stand on the spanner to loosen the nut.....
So either 110nm isn't that tight or my torque wrench isn't calibrated correctly. Going to borrow another torque wrench and perhaps take it to a tyre fitters to be checked.
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