Damn M5 motorway, second flat tyre in 18 months, i must really check for glass and tacks more often, the puncture proof inner strips are great but if a bit of glass is left to bury in it will, eventually cut all the way thru Posted on July 9, 2013 by gerry on a side note, that M5 motorway sucks now with the roadworks.. In Album 2013-07-09