Despite placing comfortably inside the top ten at Misano on Friday, Danilo Petrucci was "not really satisfied" with the overall feeling aboard Ducati's GP14.2.

Having received the bike upgrade after a string of impressive results in 2015, including his stunning ride to the podium in Silverstone, Petrucci was concerned by both the lack of grip and endurance offered by his rear tyre.

The 24-year old set his fastest time at the close of FP2 after tucking in behind countryman Valentino Rossi but he went on to claim his final time was "not important".

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In the face of his problems with rear grip Petrucci still restated that his target remains to finish inside the top ten on Sunday.

"We were not really satisfied today because in the test in July we were faster than today but really much faster," said the rider from Terni, eighth in the world championship. "Especially in the race pace, not the qualifying lap. At the end I'm not happy because I'm struggling a lot with the pace and especially with the rear tyre. It slides after four or five laps, I have no traction in the rear, both in entry and exit of the corner.

"At the end I'm happy for the classification because I'm seventh but today is not important. I want to change something on set-up to stay more comfortable around the top ten. It's difficult but for us that's our target.

"The track change a lot but for sure it's more cold. When it's more cold it's faster, usually it's faster when cooler. During the test [in July] there were almost 60 degrees on the ground and we were faster than today so it's pretty strange."

Asked to speak of the differences between the GP14.2 and the 14.1, which he had ridden for the first 12 races of the year, Petrucci said he is yet to experiment with his new machine's full potential.

"What is very different is the position of the body on the bike. The chassis has changed on the leg part, where I'm seated. So at the moment this is the biggest difference. The other is the possibility to change the weight on the front. We can load the front more on the GP14.2 but we still have not used that part of the bike. At the moment it's like the other bike, not really different."