Beamish wrote:You havn't peed someone off have you? My brother in law used to be hassled/annoyed by some drug dealing types and they used to park near his garage. To cut a long story short he used to run round the car with a lecky screwdriver screwing self tappers into their 20 inch pimp tyres. They got the message and ****** off. Suprising that they dont go down immediately but they dont. I watched him do it

Try this one for a laugh:
Simply pump their tyres up to 80psi, and watch them go straight on when they try to spin the tyres up at T junctions.
Almost impossible to spot, and I'm not sure that you could be prosecuted for it, either....
It's not falling off, it's an upgrade opportunity.