Tyre problems were the reason for a lacklustre performance from Ferrari on Friday in Baku ahead of this weekend's Grand Prix of Europe, according to Kimi Raikkonen.
"We struggled to make the tyre work for one lap and they don’t work exactly like we want," he said. "The single lap time is not there but as we do more laps it seems to get better and better.
"We don’t know what the others are doing, but when everything worked the balance was kind of okay.
"But it was more about trying to get the tyres to work for one lap and this seems to be a difficulty right now, more laps seem to help but over one lap it’s we need to find something to get the grip out of them.
"We have to see what we did today and see what we can improve tomorrow on that side."
Raikkonen's session ended early when the back wheels of his car locked up with a technical issue, forcing him to take to the nearest run-off area and park.
"I just walked back from there and I don’t think the team know yet. The car just stopped but I don’t know the reason," he said. The team later called in his team mate Sebastian Vettel citing an issue with the MGU-K unit and suggesting that it had been the same reason for Raikkonen's issues.
Raikkonen added that he didn't have any issues with the new Baku City Circuit, which is making its début in Formula One this weekend.
"The circuit was okay," he said. "It is a bit slippery like all the new circuits but the layout is pretty okay. It’s a different and new place."
Hamilton 0.7s clear, Rosberg stops in FP2
Chris Medland’s 2016 Grand Prix of Europe preview
Breakfast with ... David Hobbs
Keep up to date with all the F1 news via Facebook and Twitter
Mercedes may be powering a large chunk of the Formula 1 grid right now, but…
Helmut Marko is closing the chapter on a remarkable 25-year career as Red Bull’s motorsport…
As the dust settles on a thrilling 2025 F1 season, McLaren's Oscar Piastri is keeping…
In an F1 paddock often defined by fierce rivalries and ruthless competition, an unexpected storyline…
In December 1994, Michael Schumacher, fresh off securing his first Formula 1 World Championship, took…
As Formula 1 closes the books on 2025 edges closer to its biggest technical reset…