Correlation issues impacting RB13 performance

Christian Horner revealed that Red Bull Racing had uncovered 'correlation issues' between its wind tunnel readings and the on-track performance of its RB13.

Both Daniel Ricciardo and Max Verstappen have underlined their car's delicate balance and its very narrow set-up window.

While the gap with frontrunners Mercedes and Ferrari appears reduced in Bahrain, Red Bull still remains at a fair distance from its rivals.

"For the first time in a long time, the correlation between CFD, the wind tunnel and the race track does not match.

"We get three different sets of data," Horner said.

Red Bull still banking on 'different' design approach

Design changes to several areas and parts of the RB13 are in teh works but won't appear until he Spanish Grand Prix at Barcelona in May

"We have understood our chassis problems," Helmut Marko told Auto Motor und Sport.

"But we need to wait until Barcelona for the solution. We are too fast on the straights," Marko admits, referring to the RB13's low drag but also low downforce characteristics

Commenting on the prospects of Red Bull's modified car, Horner confirmed that "The step will be significant".

GALLERY: All the pictures from Saturday in Bahrain

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Phillip van Osten

Motor racing was a backdrop from the outset in Phillip van Osten's life. Born in Southern California, Phillip grew up with the sights and sounds of fast cars thanks to his father, Dick van Osten, an editor and writer for Auto Speed and Sport and Motor Trend. Phillip's passion for racing grew even more when his family moved to Europe and he became acquainted with the extraordinary world of Grand Prix racing. He was an early contributor to the monthly French F1i Magazine, often providing a historic or business perspective on Formula 1's affairs. In 2012, he co-authored along with fellow journalist Pierre Van Vliet the English-language adaptation of a limited edition book devoted to the great Belgian driver Jacky Ickx. He also authored "The American Legacy in Formula 1", a book which recounts the trials and tribulations of American drivers in Grand Prix racing. Phillip is also a commentator for Belgian broadcaster Be.TV for the US Indycar series.