Kimi Raikkonen finished inside the top four in both free practice sessions at the Autodromo Hermanos Rodriguez on Friday, but admitted it was too early to know where his Scuderia Ferrari team sit in the pecking order this weekend.
The Finn slotted in behind team-mate Sebastian Vettel into third in the morning session in Mexico, but slipped to fourth in the afternoon, ending 0.469 seconds down on the German who topped the session.
Raikkonen admitted to struggling with understeer during the afternoon session in particular, and is looking for a solution overnight so he can get closer to the outright pace, and goes into the rest of the weekend hopeful of a strong performance.
“Overall it was pretty ok today, but it’s still early to know where we are and how’s going to be,” said Raikkonen. “I had some understeer, mainly in the afternoon, with new tyres on it was a bit tricky, but it’s still the first day of practice.
“Now we have to concentrate and work on a few things as we normally do after the Friday’s session and hopefully tomorrow, on new tyres, we can push a bit more.”