Nice one Pete!
GTBob. Whilst you may well be correct inasmuch as the kerb in T4 exacerbated the problems, I would have to say that not every car suffered in this way, nor did any of the supporting races including GP2, or even the FIA LMS Series recently. In fact this kerb has not changed since this part of the track was built, what, 3 or 4 years ago.
Sorry, this is a Pirelli problem and as to why, well there's enough speculation going around without me adding to it.
I have never personally witnessed such a spectacular tyre failure since perhaps Mansells's epic blowout in Australia which cost him a WDC.
To have four such spectacular failures cannot be laid at the door of a track which has not been changed in several years.
There is something fundamentally wrong with this whole tyre deal. Not blaming it on Pirelli totally, but they must take a lot of the responsibility.