Red Bull initially failed new floor tests

The intended configuration of Red Bull's car for the Italian Grand Prix failed the FIA's more stringent floor flexibility tests.

It emerged earlier this weekend at Monza, where Sebastian Vettel was ultimately the team's highest placed finisher in fourth, that the key competitors all passed the tougher tests.

Indeed, the RB6, as well as the Ferrari and McLaren, were tested by official FIA scrutineers at various points on Friday and Saturday and were all deemed legal.

But it has emerged that, prior to the official tests, Red Bull and McLaren – who both admitted to making modifications before travelling to Monza – asked to use the FIA's new testing equipment and methods in the scrutineering bays.

McLaren's MP4-25 passed, but Red Bull's car failed by a small margin, according to the BBC.

The team reportedly made overnight modifications, and after Mark Webber qualified fourth on Saturday, the RB6 was re-tested and officially passed the new tests.