Sebastian Vettel is expecting a fight with Mercedes during this weekend’s Korean Grand Prix.
Vettel was just over a tenth of a second slower than Lewis Hamilton during second practice and believes that Red Bull can go quicker.
“There is some room for improvement,” said Vettel.
“It will be close with Mercedes; of course we’re not sure what others were doing with their fuel loads today, but it seems close ahead of tomorrow’s qualifying.”
“I like the track here, it’s a shame it’s so far from Seoul, which is a great city, but it’s good coming here as it’s quieter than some other races, which means we can focus on our job.”
Team-mate Mark Webber was fourth fastest and is focusing on good straight line speed in his Red Bull RB9.
Webber will drop 10 places on the grid from where he qualifies as a result of sustaining his third reprimand of the season in Singapore.
“We need to work on the balance; it’s more about understanding the tyres again and getting those working as well as possible,” he said.
“We need to work on both the short and long run balance, as obviously I’m going to be out of position after qualifying. We need to have a car which can be strong in the first sector, so we can get some overtaking done.”