When Michelin entered MotoGP, their official objectives were to use premier class motorcycle racing as a laboratory to be able to do R&D at the very highest level, to learn lessons about designing and building tires that simply can't be learned on the street.
Unofficially, of course, they also wanted to show up Bridgestone – or as Michelin refer to them, the previous supplier – by smashing the lap records set on the Japanese rubber as quickly as possible. They did that pretty quickly, and within a couple of years most of the lap records were gone.
But a few hung on stubbornly, year after year. The outright (Marc Marquez, 2014) and race lap (Valentino Rossi, 2015) records at Argentina are still from the Bridgestone era, as is the record at Phillip Island, which is in the hands of Marc Marquez from the bizarre 2013 race where the brand new track surface was generating so much heat in the tires that the race was shortened and compulsory pit stops to swap bikes were introduced.