Schuey says best still to come from Williams

The performance curve of the Williams squad has taken a distinct upturn this year, enabling Michael's younger brother Ralf to take two victories, most recently in Canada three weeks ago.

Much of the team's success has been put down to its BMW engine, which is widely regarded as the most powerful unit in F1. Ralf and team mate Juan Pablo Montoya regularly top the speed traps, but Schumacher Sr believes the best could be yet to come.

"The fact is that we have seen more top speed for Williams than for anyone else," said Schumacher. "So that means that in general it seems to favour them more than us, whenever top speed is important. But then we will find out when we come to the real high speed circuits.

"We haven't been to one yet - Canada is sort of - but Monza or Hockenheim will tell us more about what is the high speed situation. I think that if we hadn't had trouble in Canada we could have won that race."

Ralf ran his brother close during the European Grand Prix at the Nurburgring last weekend, but dropped back after a stop-go penalty. The German siblings have made the battle for the lead in the last two races all their own, but the reigning world champ says he is not worried about his younger brother becoming a serious championship contender.

"Our relationship will not suffer at all," said the Ferrari ace. "It will be 100 percent the same and I will be very delighted. As you know, I have achieved quite a lot and I will be very happy to see my brother doing very well."