We've had two flat tyres in less than a week. In Ilfracombe last Friday the front nearside on my Mercedes went flat with screw damage in under 300 yards and I had to get a replacement from ATS in Barnstaple (very good) for £141 and yesterday my wife's new Celerio had a screw sticking out of its shoulder for another £52. Both tyres were almost brand new. That's nearly £200 and a load of bother for nothing.