Kimi Raikkonen concedes Ferrari is in for a difficult Brazilian Grand Prix after struggling for pace in practice on Friday.

The Finn finished down in 18th position in the second session, with team-mate Giancarlo Fisichella completing a poor day for the Italian squad by setting the slowest time.

Both Raikkonen and Fisichella admitted they were struggling with their cars in the second sector.

"I'd say this Friday was not too different to others we have experienced this season, especially in recent races," said Raikkonen. "It's all very close so it will only take a small step forward to climb back up the order, but we are definitely facing a difficult weekend.

"The tyres suffered with a bit of graining, which made itself felt especially in the second sector, but I believe that, as often happens here, once the track rubbers in, the situation will improve."

via Autosport.com