Finishing outside the top ten in Friday practice wasn't the start to the Canadian Grand Prix weekend that Lotus F1's Kimi Raikkonen was hoping for or expecting, but problems getting the tyres to their operating temperature in the wet chilly morning conditions followed by a brake issue in the dry afternoon session hampered his efforts.

"Kimi's session ended early as we made a precautionary stop related to the rear brakes, but it's nothing of concern for the rest of the weekend," said Alan Permane, the team's trackside operations director.

"We improved the car through the day and by the end of the session it was okay - not ideal but certainly not a disaster either," the Finn insisted after the premature end of his day.

"It wasn't easy to get the tyres up to temperature today, but it's pretty cold at the circuit so that's not too much of a surprise," he added. "If we can get the tyres working better it will be an improvement for sure, but it's not going to change the world.

"We'll be looking at how to get them a bit warmer for qualifying tomorrow and then see what the weather does," he said. "After that, we'll do the best we can."

He'll be encouraged by the form of his team mate Romain Grosjean, who bounced back from a torrid time of it last time out in Monaco to set the third fastest time at the Circuit Gilles Villeneuve in Montreal.

Grosjean echoed Raikkonen's comments about the tyres and said that he had also found it difficult to get the tyres to 'switch on' in the inclement conditions on Friday.

"It's quite hard to get the tyres switched on in these conditions as the surface here is very smooth, so with low temperatures it's a bit more tricky to build up the energy in the rubber," he explained. "More so with the mediums but even with the supersofts. It's meant to be quite warm on Sunday which is always a good thing for us, so we'll try to get the maximum from the car in qualifying tomorrow and go from there," he added.

Permane agreed that the warmer conditions on Sunday should paper over any problems the team struggled with in the unusually chilly conditions on Friday.

"We didn't learn too much in the morning in the damp conditions, other than getting some worthwhile laps on the intermediate tyres to ensure we're happy in case of a wet qualifying session," he said. "In the afternoon we ran all three types of dry tyre - including the developmental spec - so we've got a good amount of data to collate overnight.

"We're fairly happy with our single lap pace, but we weren't as comfortable as we usually are on high fuel levels," he added - an admission that will surely catch the ears of personnel at other teams in the pit lane in Canada this weekend as they make plans for Sunday's Grand Prix.