Webber: Williams must get results

On the back of what he called an 'embarrassing' performance at the Canadian Grand Prix, where the team's hopes of a decent finish were wrecked by a wrong tyre choice, Webber knows the Grove-based outfit cannot continue their current form.

The team have not scored points since the European Grand Prix and are currently seventh in the constructors' championship.

"We have to start getting some results," said Webber ahead of the United States Grand Prix. "Someone said it is like 18 years since we have gone four races without any points.

"We picked the wrong tyre before we went to Montreal. Not at, before we went. In the race, I was fuelled to go to lap 30 but after seven laps I was toast. It was a very embarrassing Grand Prix for everyone."

Although Williams have shown flashes of speed this year that could have netted them several podium finishes, Webber thinks that such promising form is not good enough. He thinks only hard results count at the end of the day - which leave the team's current tally of 10 points disappointing.

"I am trying to remain as positive as possible," he said. "I had a lot of technical problems at the start of the year, and then we had the engine penalties at the Nurburgring.

"There have been lots of good races that haven't given us anything. If you stop on the last lap or the first lap the result is the same. No one is interested in what should have been, what could have been - or whether we were competitive here or showed potential there.

"If you don't see the chequered flag, it counts for nothing. We need to start being consistent at each venue, and only a couple of teams are getting it right this year. The others are all over the place."

With the characteristics of Indianapolis likely to allow the FW28 to stretch its legs, Webber is quietly confident about the team's prospects for this weekend - and adamant there will be no repeat of the tyre problems from Canada.

"We won't see what happened in Montreal in a hurry again, that is for sure," he said. "We have to make sure we pick the right tyre in terms of pace for the whole race.

"The weather should be consistent here, and hopefully the weekend should be pretty straightforward. We have the put the lions among the pigeons with the tyre choice we made in Canada. It didn't work, and it was an expensive mistake."

Webber's teammate Nico Rosberg has been given a new engine for this weekend's race but will escape a penalty because he did not finish in Montreal.