(GMM) Sauber's new tire supplier Michelin will ban team driver Felipe Massa from testing for Ferrari in 2005, it was revealed in the UK's expert press. Ferrari-powered Sauber, a partner of Ferrari's near exclusive tire supplier Bridgestone until now, made the switch to French rubber in a bid to move up the F1 grid. It is reported that Michelin's 'veto' compelled Ferrari to sign Marc Gene as a second full time test driver. Massa, who often tested a scarlet car for Ferrari in 2005, is under long term contract to the Maranello-based Scuderia. Meanwhile, other sources revealed that Michelin will also forbid Sauber from testing at Ferrari's private Fiorano track.