Different tactics for Mercedes and split strategies for Hamilton and Rosberg: on the podium for the second time this year.
Tropical climate makes it likely for 2015 Cinturato intermediate and full wet tires to make their competitive debut.
Increase in performance confirms the data collected in pre-season testing.
Two pit stops expected for the majority of runners tomorrow.
Lap times may be up to two seconds faster than last year: A gap of more than one second expected between soft and medium.
Teams continue season preparation by trying out all the tyres in Barcelona apart from the full wet.
Different strategies set up a grandstand finish between Hamilton and Felipe Massa.
Hottest track temperatures in recent history at Interlagos, combined with new asphalt, provide a big challenge for tyres in first stint.
Medium and Soft tyres for one of the shortest but most intense laps of the year.
Force India has a radical suggestion about how F1 should proceed in the sport's Pirelli-tyred era.
Medium and soft tyres for the first brand new circuit since Austin.