Red Bull believe the reason for Sebastian Vettel's lack of pace so far this year has to do with a fault in his RB10's chassis.
According to Helmut Marko, Red Bull's special advisor, the four-time reigning World Champion is struggling with the rear of their 2014 car, dubbed 'Suzie' by the German racer ahead of the season.
"When downshifting, Sebastian needs a stable rear for his special style of driving. With all the new systems, he doesn't have that yet," Marko is quoted as saying by Germany's Sport Bild.
"In 2012 it was the same and by the time he was happy with the rear he was unbeatable.
"We don't understand why Vettel's tyre wear was so much higher than Ricciardo's...
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