Pirelli calls off introducing new F1 tyres before Belgian GP

The Italian tyre manufacturer had intended to introduce its modified tyres for the Canadian Grand Prix, but then agreed to just test them in practice before a planned introduction in the British Grand Prix.

With rain hitting practice in Montreal, the plan had to be scrapped, and the company announced it would instead use a revised bonding procedure to correct the delamination issues.

Pirelli announced on Thursday the compounds for the upcoming three races, also confirming the tyre constructions will not be changed.

"This decision is due to the fact that the new tyres, which were brought to the Friday free practice sessions in Canada, could not be tested sufficiently due to rain - and that the teams failed to agree unanimously about introducing the changes," said Pirelli in a statement.

The Italian company will take the hard and medium tyres to the British Grand Prix, while it will use the medium and softs in Germany next month.

For Hungary, Pirelli will take the hards and the mediums once more.

Tyre compound choices in 2013

Australia         Supersoft            Medium         
Malaysia                               Medium     Hard
China                          Soft    Medium         
Bahrain                                Medium     Hard
Spain                                  Medium     Hard
Monaco            Supersoft    Soft                   
Canada            Supersoft            Medium         
Great Britain                          Medium     Hard
Germany                        Soft    Medium         
Hungary                                Medium     Hard