Andrea Dovizioso admitted his approach around the Phillip Island circuit needed tweaking after he endured a difficult first day of MotoGP free practice.

Around a track which requires riders to spend a lot of time at maximum lean angle, Dovizioso found his racing lines to be ineffective as he failed to bring the speed shown in Japan to Australia.

Despite fitting a softer option rear tyre towards the end of the 45-minute afternoon session, Dovizioso was unable to climb higher than 14th, a disappointing outcome considering team-mate Andrea Iannone placed fourth.

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"Not the best," was Dovizioso's assessment, who acknowledged a change was needed in his riding style around the flowing track. "The position is very bad but we are not so far. I struggle a lot with the track. I couldn't turn the bike good enough. The turning here is the key point. We improve the bike a little bit but that was in braking stability. Here is the opposite way. I think we have to change a little bit this.

"Apart from that the biggest change will have to be my line. My lines were not the best I have to approach the track in a different way because it didn't work how I rode today. It's [The lines] similar to last year and I was quite slow last year! So I need to change a little bit the approach. It's not easy during the weekend but I think I will be working on that."

A positive came in the form of the asymmetric front tyre, which Dovizioso claimed was an improvement on the 2014 version.

"I use the asymmetric front in all of free practice two and it work very well. Bridgestone did a good job compared to how the tyre worked last year. The grip is really good.

Asked he felt the front compound is an option for Sunday's race, Dovizioso said, "Of course."