Pirelli has released a video explaining the new tyre regulations for 2016.
In a bid to spice up racing this year, the tyre rules were tweaked to give teams a choice of three compounds rather than two at a race weekend. Of the 13 sets available to drivers over a weekend, Pirelli sets aside one of each -- leaving 10 sets available for each driver to choose between for the race weekend.
Of the three compounds set aside by Pirelli, the softest will always be the one set aside for qualifying, with one each of the other compounds allocated for Sunday. The regulations state two different compounds must be used during the race, though that does not have to be both of the tyres set aside for use by Pirelli for Sunday.
The driver-by-driver choices for the Australian Grand Prix can be seen here.