Red Bull in the dark over Vettel?s tyre

Red Bull Racing thinks it may never have a definitive explanation for what caused Sebastian Vettel's puncture in the Abu Dhabi Grand Prix, after post-race analysis failed to uncover a firm answer. Although investigations have ruled out a structural failure of the tyre or valve, and Pirelli says it has discovered no proof that debris was to blame, Red Bull Racing suspects that the most likely cause of the tyre deflating was a piece of carbon fibre from another car that Vettel ran over at the first exit kerb. Red Bull Racing team principal Christian Horner said that analysis work with Pirelli had failed to uncover a definite cause

Masami Kuwashima Robert La Caze Jacques Laffite