The FIA has brought Ferrari into the investigation of tyre tests conducted by teams for Pirelli.

Ferrari had joined Red Bull in protesting Mercedes over their participation in a three-day test at the Circuit de Catalunya ahead of the Monaco Grand Prix.

However Ferrari themselves are now facing questions from the FIA. Ferrari are also believed to have conducted a test for Pirelli between the Bahrain and Spanish Grands Prix. Unlike Mercedes’ test, it was conducted with a 2011-specification car rather than a 2013 model.

“The FIA has asked Team Mercedes AMG Petronas F1 and Scuderia Ferrari Team which have taken part in tyre tests in the 2013 season to reply to a disciplinary inquiry in pursuance of the FIA judicial and disciplinary rules,” said a statement issued by the sport’s governing body.

“This follows the stewards’ report from the Monaco Grand Prix and represents supplementary information required by the FIA in the light of the replies received from Pirelli, who were asked for clarifications on Tuesday May 28th.”

Red Bull and Ferrari made their protest under article 22.4 (h) of the Sporting Regulations which prohibits track testing: “Between the start of a ten day period which precedes the start of the first event of the championship and 31 December of the same year with the following exceptions:”

“i) One three day young driver training test carried out on a date and site approved by the FIA following consultation with all teams. No driver who has competed in more than two F1 world championship races may take part in this test and all drivers must be in possession of an International A Licence.”

“ii) Four one day aerodynamic tests carried out on FIA approved straight line or constant radius sites between 1 February of the current year and the start of the last event of the championship. Any of these days may be substituted for four hours of wind-on full scale wind tunnel testing to be carried out in a single 24-hour period.”

“iii) If a team declares that one of its current race drivers is to be substituted by a driver who has not participated in an F1 race in the two previous calendar years, one day of track testing will be permitted between the start of a ten day period which precedes the start of the second event and the last event of the championship.”

2013 F1 season

Image ?�?� Ferrari/Ercole Colombo