Strangest coincidence I've ever had between cars I've owned.

My previous car, MkV GTI 2006, picked up a screw in the left rear tyre in September 2006. My current car, MkVI GTI 2010, picked up a screw in the left rear tyre in September 2010.

Not only that, both screws were in a similar position on the tyre - between the first and second blocks of tread (from the outside).