Williams complete Vallelunga test.

Williams has completed its three day test session at the Vallelunga circuit as preparations continue for the showcase event of the Formula One calendar at Monaco.

Mark Webber and Antonio Pizzonia brought the test session to a close by continuing the work carried out earlier in the week, focusing on set-up work for the race in the principality while also completing extensive work with engine suppliers BMW.

Pizzonia improved his quickest time of the week to 57.149secs, while Webber was slightly slower than his time set on Wednesday, when he took over behind the wheel from ETCC champion Andy Priaulx setting a best time of 56.632secs.

"Today we finished an extensive test at the Vallelunga circuit, near Rome, in preparation for the Monaco Grand Prix," technical director Sam Michael said. "We spent the test working on starts and traction control performance with BMW. We also evaluated tyres for Monaco and completed longer runs to system check some cooling system changes.

"The weather in Italy was perfect for testing tyres, with the ambient temperatures identical to what our long range forecast says we will have in Monte Carlo. We also verified some aerodynamic components that we used at the Barcelona GP and found they are all working well.

"Along with Antonio and Mark, Andy Priaulx tested for us again and did a great job in the car. He is an asset to our test programme. I'm impressed at how well he has adapted to a Formula One car and I'm sure we will call upon him again in the future."

BMW motorsport director Mario Theissen was also pleased with the outcome of the test session and said he was confident that the results will be evident in Monaco.

"From BMW's perspective, it was a really good test in Vallelunga and we completed our scheduled programme," he said. "We focused on improving the start performance and traction control, both of which will be crucial for the Monaco Grand Prix. In addition, we made adjustments to the engine management system in preparation for the slow corners in Monte Carlo, like the Loews hairpin."