After finishing second to Sebastian Vettel for the third consecutive race in the Singapore Grand Prix, Fernando Alonso offered a very simple explanation for falling out of contention for the drivers' championship
"We won in China, we won in Spain and then we seemed to lose a little bit of performance, especially when the 2012 Pirelli tyres came back," said Alonso. "That was probably our point in the championship. When they changed the tyres, we said bye-bye."
It's true that Alonso's deficit in championship to Vettel has almost tripled since the tyres changed. After the British Grand Prix, he was 21 points behind. Five races later, he is 60 points down.