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.
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
Keep up to date with all the F1 news via Facebook and Twitter
Oliver Bearman left Bahrain convinced Haas had thrown away a genuine chance of points after…
Valtteri Bottas, Cadillac (DNF) – 3/10 Bottas spun out in the opening laps of the…
Audi is turning the Singapore night into a canvas of its own, unveiling a striking…
Michael Andretti was born into this world on this day, 64 years ago. An impressive…
Racing Bulls turned a chaotic Bahrain Grand Prix into a points bonanza, with Liam Lawson…
Fernando Alonso delivered to Aston Martin its best result of the 2026 season in Sepang,…