Really sorry to hear about this,
I wouldnt recommend leaving them by the spare, its a bit too obvious, its a time game, if they cant find the nuts in sub 1 minute they arent going to hang around, mine are well hidden,
Its pathetic that they felt the need to vandalise the paint too, as if stealing your wheels isnt enough. We should have tougher sentences for these scroats', all they'd get is a slap on the wrist most likely even if caught.
Save up and buy your own wheels! Scum!
and relax.....
R