well guys went to check my spare wheel yesterday and the twist bolt that holds it in .well lets just say I had to use a pair of mole grips to undo it the last few turns .glad I wasn't out and late at night that I needed the spare so don't know if it was just mine or do people need to check this . if this is of any help good .
Checked mine recently & all is well although it had a 16" spare! The other issue that can be overlooked is the actual air pressure in the spare tyre, worth checking every so often when checking tyre pressures.