Brazilian GP qualifying quotes: Pirelli

Paul Hembery: "A wet qualifying session meant that the drivers and teams were dealing with a lot of uncertainties, but they at least had relevant information from the wet running yesterday. The keys to a strong performance were ensuring that the tyres were operating within the correct temperature window, and timing of the fast laps. Being on the right tyre at the right time was essential to do well, and with this track having the capability to dry quite rapidly, the circuit had the potential to get quicker towards the end of each session. At the same time, the teams had to constantly guard against the risk of conditions getting worse

"The teams have gained some information about the crossover point from full wets to intermediates, but they have no information about the crossover from inters to slicks - which might be important in the race tomorrow, where variable conditions are again likely. Even if there is no rain at all, with so little dry running up to now, the teams will be operating with limited data.

"The wear and degradation for both the intermediate and the full wet tyres are not set to be an issue tomorrow should they be used for the race. Strategy will obviously depend on the weather and for the moment that is wide open: the teams that are able to read the changing circumstances of the race most effectively are going to be the ones that come out on top."