Kimi Raikkonen has said 'various reasons' meant he was unable to do a better lap on Friday in practice for the Austrian Grand Prix.

The Finn, who has struggled a bit since returning to the Scuderia and who has yet to really match team-mate Fernando Alonso, finished FP1 and FP2 in P11, his best lap a 1m 10.974s - which left him just over half a second off the sister car.

"In the afternoon, I had a better feeling from the car, but for various reasons, including a lack of grip, traffic and the wind, I didn't manage to put together a good lap, or to improve in the final sector," he confirmed.

"Today was particularly busy, which is normal when you go back to a track for the first time in many years," he added.

"Despite the changeable weather reducing the amount of track time in the first session, we still managed to complete our programme though, which today centred on analysing new aerodynamic parts brought for this race," he continued. "Along with Fernando, we concentrated on different set-up tests, me on the front end and him on the rear, so as to compare the data from the second session."

Ferrari's director of engineering Pat Fry meanwhile conceded that the Scuderia still has work to do on the F14 T.

"Over the two sessions, we made various set-up changes to meet the demands of the different driving styles of our drivers and we did see a slight improvement.

"Of course, we can't say we're pleased with that, however, because we still need to find the perfect balance and therefore we will need to make the most of today's data to work on the handling of the car," he commented.