On the day after the Italian Grand Prix, the MotoGP riders were back testing at Mugello. This time, however, it was only the factory riders who remained, to give the Michelin tires another run out. The last time they took to the track on the Michelins was at Sepang, and Michelin had brought the latest iteration of their tires to test.
Due to the commercial sensitivities involved, there was no official timing, and the riders were not allowed to speak to the media about the test. Unsurprisingly: Bridgestone hold the single tire contract for the 2015 season, having spent a lot of money for the privilege, so they do not want Michelin stealing their PR thunder. Nor do Michelin really want to be subject the intense scrutiny which official timing would impose while they are still in the middle of their development program.
That does not mean that the small band of journalists who stayed at the test did not learn anything, however. Michelin had brought four front tires to the test, and the factory men spent the morning and the early afternoon selecting their favorite from the four. The plan was for the riders to then try that tire in a full race simulation, to see how the tire stood up to a race distance of 23 laps.
That plan was quickly canceled. There had been no falls during the morning and early afternoon, but on the first laps of his long run, Jorge Lorenzo crashed out at Materassi. Once the track was cleared, it was the turn of Marc Márquez to go out, but on the second lap of his run, he too crashed, this time at Arrabbiata 1. With the debris of the Repsol Honda out of the way, Valentino Rossi followed, the Italian falling at Correntaio. At that point, the plan was abandoned.