Sebastian Vettel says he doesn't expect to see a repeat of his success from the Singapore Grand Prix in Russia despite a more aggressive tyre allocation for the Sochi race.

Having been far too conservative with its tyre choices for the inaugural Russian Grand Prix in 2014, Pirelli will offer supersoft and soft rubber for this year's Sochi Autodrom race.

Bringing it into line with the allocation offered at the Singapore Grand Prix - where Vettel dominated for Ferrari -, the four-time champion doesn't believe the tyres alone will be enough for him produce a similar challenge towards Mercedes in Russia.

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"I think it will be quite different," he said. "Obviously it is a completely different track and other than the compounds I don't think there are many similarities, but if the result is the same I won't mind. It's a long way because it's Thursday and first of all we focus on Friday and try to get the car in the window and go from there.

"I think the weather will also play a big role, because maybe tomorrow we won't use the soft and super-soft at all. We will see.

"Anyway, it will be a difficult weekend to get everything right, and last year it was a difficult circuit to get it together and the gaps between the cars were fairly big because some people were struggling more than usual.

"You need to get everything right and that is what we try to focus on. I know that is not the exciting answer you were hoping for, but it's the truth."