Pizzonia enjoys Spa F1-style

The Brazilian finished the day seventh quickest ahead of his team-mate Juan Pablo Montoya (10th), but while 'Jungle Boy' gushed over the Eau Rouge corner he admitted that more was needed from the FW26.

"I drove an F1 car here for the first time today and it is quite different" he said. "With other cars, there were several corners where I would easily go flat out, but conditions are not the same now, since speed is much higher! I'll get used to it, I am sure, but I need some time. Also, going through Eau Rouge is good, it's quite exciting, as I was expecting. I am sure everyone is taking it flat out. Anyway, there's more to come from the car and a lot more to come from me as well."

Meanwhile, team-mate Montoya complained of a lack of balance on his machine but remained confident for the rest of the weekend.

"Not a satisfying day for me because I am not still happy with the balance of my car," the Colombian said. "It definitely improved a lot from this morning, as the car became much more predictable to drive and more stable at the end of the first session. I hope to have some more dry running tomorrow which will help us to get the car right for qualifying."

While Ferrari is sure of its tyre choice for the weekend, Williams technical director Sam Michael admits deciding which Michelin compound to opt for will be tough.

"The choice for the tyre compound is going to be difficult," he said. "That is what we will have to look at tonight. The rain held off today but it looks like it could be wet tomorrow morning. In any case, it is challenging to find the balance between high speed and low speed set-up here in Spa."