| It may be worth going to or, ringing either the Traffic (Operations) dept or even trying to pin someone down at the Headquarters concerning Policies and proceedures.
If, and i would suspect their Policy will be vdrs unless it is so dangerous, (and your defence here is, clearly it wasnt or you would of been Prohibited), then efpn.
If this is the case then i would look to speak to a duty Inspector, or sgt and make an Official complaint. Have you kept THE tyre.
Of course it may not go anywhere but is surely worth a try? | 
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