Formula One title outsider Sebastian Vettel has revealed that he was not too bothered to see Friday's rain blight both free practice sessions at Suzuka.

The German, who needs a major upheaval in points over the final three races of the season if he is to overhaul Jenson Button's 25-point advantage, was only 17th on nthe combined timesheets after day one of the Japanese round, but insisted that he would not have been able to do too much more had conditions been better for F1's return to Suzuka.

"If you take a look at how many engines are left for us, we are very limited anyway with mileage, so for us it was not too wasted," he told the official F1 website, referring to his dwindling engine supply.

"We only had the chance to get used to the track in heavy wet conditions, and that was basically it. As everyone could see, a lot of driving was not possible, and all of us were just able to carry out the minimal amount of laps. Also we have to save tyres, so that, if it rains on Sunday, we still want to have some new sets of tyres available."

Describing countryman Timo Glock's illness-induced absence as 'the right choice' in the circumstances, Vettel admitted that he was also unconcerned about suggestions that the rain may return later in the weekend.

"For us, this does not matter, as I think our car works well in both dry and wet conditions," he said confidently, "To interpret anything into the timings would be senseless, as there is no black and white. For me, the most important thing was that the car felt very good. The rest we have to see on Saturday.

"It might be possible [that there is more rain for qualifying], as you don't know for sure if it's going to stay dry here in Suzuka. If it is the case, it was even more important that we could get a feeling for the track in very wet conditions."