Red Bull arrived in Valencia with a heavily upgraded RB8 challenger, which promptly scorched to pole and led comfortably in the race. Craig Scarborough details the changes and explains why the car made such a jump in performance

Despite only being denied a third victory of the season in Valencia by unreliability, Red Bull is still struggling with development of its RB8.

Normally, it is the team that sets the design direction for the rest of the grid, but this year its exhaust solution has left it trailing. Not since 2009 and the double diffuser upgrade has Red Bull had to make such major updates to the car mid-season.

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