Though the riders competing in the 2015 MotoGP championship have all departed, the factories stayed on at Sepang for another day of testing. For the fourth day of the first Sepang MotoGP test was designated as a test day for Michelin, who are due to take over as official tire supplier from 2016.
The legal complications of the change from Bridgestone to Michelin mean that the tire test is shrouded in confidentiality, rather than secrecy. This test features only the test riders, all of whom have been barred from talking to the press about the tires.
Times were not recorded, and definitely not released, though a handful of hardy journalists stood at trackside with handheld stopwatches (or smartphones) and tried to time riders that way.