Felipe Massa believes it is very hard to predict who is the favorite for pole in the Monaco Grand Prix following Thursday practice.
With rain hitting the track early in the afternoon session, most teams were unable to test the super-soft Pirelli tires, used in a race for the first time this year.
Ferrari driver Massa completed 19 laps in the second session on his way to the third quickest time and the Brazilian said he was pleased with his day's work, but admitted the conditions made it very hard to predict the pecking order.
"I think it was a good Friday. But it was very difficult to say, especially in Monaco on Friday it is difficult, even for us it is not clear what the situation will be in qualifying," said Massa. "The car was OK. It was good to drive in terms of balance and even degradation of the tires – not just for us, everybody was improving the lap time at the end of the run with the soft tires.
"We did not try the super-soft so that is another point, we don't know what will be the difference between soft and super-soft, but everything felt OK. Even in the rain, the feeling was not too bad. We'll see how it will be in qualifying."
Massa did concede his Ferrari was working better than expected in terms of traction, one of the weakest areas for the Italian squad.
"I think the traction was maybe a bit better than expected. So, I am not sure if it was just related to the feeling because the tires are not degrading a lot, the tires are working OK. Especially on the soft tires – so we need to see with the super-soft how it is going to be with the grip and everything, but the feeling was maybe a bit better than expected with the traction. If you have no problem with traction, and on the track you don't feel anything because of the top speed, it can be very positive."