Hmm... Some time back, on 31 August, I posted that a screw had just cost me over £100 because it had got embedded in my rear driver-side tyre, puncturing it beyond repair. Today, I discovered my rear driver-side tyre was flat and, yes, there is indeed a screw embedded in it.
I've been driving for some 16 years or so and never had this problem and now, it's happened twice in the space of just over two months. Not happy.