The crucial test at Spa-Francorchamps has prompted Bridgestone to announce the tyre compounds to be used for the final five races of the 2007 season.

With the newly configured Belgian circuit creating a question mark over compounds, the test there between the British and European races have answered that query and as a result Bridgestone have revealed which tyres will be used for the remainder of the season.

The Italian, Belgian and Japanese Grands Prix will receive the usual soft and medium compounds, while the Chinese Grand Prix will see the use of medium and hard tyres.

The season-ending Brazilian Grand Prix will make teams use both soft and super-soft compounds through the race.

"Last week's test at Spa provided the final pieces of information we needed before we could confirm our choices of Bridgestone Potenza compound for the remainder of the season," Kees van de Grint, Bridgestone Motorsport Head of Track Engineering Operations, said.

"It was good to return to Spa as we enjoyed the beautiful countryside and the wonderful location of the circuit, which is shaped by nature rather than design. However, with Spa you must always be prepared for rain, and this test was no exception.

"We used the medium and soft compounds at this test and from the information we gained we are confident that these are the correct choices for the race. The Spa weather also meant we used the wet and extreme wet Bridgestones, and I wouldn't be surprised if these were also used over the Grand Prix weekend there."