MotoGP championship leader Valentino Rossi admits he has plenty of work ahead of him to get on the pace at Jerez this weekend.
Rossi, who has won two of the three races so far this year, struggled in free practice on Friday in Spain.
He got off to a solid start with sixth place in the first session, 0.7s off the pace of Yamaha teammate Jorge Lorenzo, but was over a second from Lorenzo’s best time in the afternoon.
“It was a difficult practice, especially this afternoon,” Rossi admitted. “I decided to use just the harder option and work with just that tyre, because we thought that was the best tyre for the race.
“Unfortunately the performance is very low and the lap time isn’t good enough, so I think that also the soft can be an option too, but it will be difficult. With the high temperature in the afternoon the track makes you slide a lot and it’s very difficult to control the bike.
“We had a lot of troubles in acceleration, because we suffer from wheelspin and the bike isn’t stable. We are not good with the setting yet, so we have to try and improve for tomorrow morning.
“We have a lot of things to do; a different balance of the bike, different tyres and other options.”