None. I was actually cable tieing them on and forgot to lower before fitting.

Jack was still on the metal jack point, not the plastic cover.
 
Definitely tiewrap em i've done mine loosely so I can still use the vehicle jack (that thingy in the boot )in case of puncture so if they come loose I don't loose em:lol:
I'm sure I've seen a picture on here of someone's car with em tiewrap'd in place
 
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