Seen the Pirelli press release? They're blaming the teams for running the tyres on the wrong side...
'A SERIES OF DIFFERENT CAUSES LED TO THE TYRE FAILURES AT SILVERSTONE: REAR TYRES MOUNTED THE WRONG WAY ROUND, LOW TYRE PRESSURES, EXTREME CAMBERS
AND HIGH KERBS
'THE 2013 TYRES DO NOT COMPROMISE SAFETY IF USED IN THE CORRECT WAY
'TO DEVELOP AND MANAGE SOPHISTICATED TYRES SUCH AS THOSE USED IN 2013, IT IS ESSENTIAL TO HAVE ACCESS TO REAL TIME TYRE OPERATING DATA. CHANGE IN THE RULES HAS BEEN REQUESTED
'ARRANGED WITH FIA WINTER TEST AND DURING THE SEASON FOR THE
DEVELOPMENT OF THE TYRES
THE KEVLAR BELT REAR TYRES TESTED IN FREE PRACTICE IN CANADA
WILL BE USED IN GERMANY
'FROM HUNGARY THERE WILL BE A NEW RANGE OF TYRES, WHICH COMBINES THE 2012 STRUCTURES WITH THE 2013 COMPOUNDS. THESE WILL BE TESTED AT SILVERSTONE, USING THE RACE DRIVERS AND 2013 CARS, DURING THE YOUNG DRIVER TEST
'PAUL HEMBERY: "WHAT HAPPENED AT SILVERSTONE UPSETS US. WITH THESE SOPHISTICATED TYRES IT'S VITAL FOR US TO SEE DATA SUCH AS TEMPERATURE, PRESSURES AND CAMBER. WHILE WAITING FOR A REVISION TO THE RULES, WE WILL SUPPLY TYRES THAT ARE EASIER TO MANAGE."
Apologies for the crap c+p.