Mercedes and Formula One tire supplier Pirelli called to face FIA Tribunal over tire test . The FIA began an investigation after rival teams Red Bull and Ferrari lodged an official protest on the morning of the Monaco race after discovering Mercedes had helped Pirelli carry out a three-day development test in Spain , which was reported by the stewards . ` The use of a 2013 Mercedes car and drivers to test tires may breach FIA rules . Ferrari face no further action over their private tire test for Pirelli using a 2011 car . Comment:
Mercedes and Formula One tire supplier Pirelli called to face FIA Tribunal over tire test . The use of a 2013 Mercedes car and drivers to test tires may breach FIA rules . Ferrari face no further action over their private tire test for Pirelli using a 2011 car . Comment: