Bridgestone has published details of the tyre allocations for the first five F1 races of 2009.
They vary substantially from the options available last year, because F1 has switched to slick tyres and also because Bridgestone are now bringing compounds that are two steps apart rather than one.
As a sign of how much things have changed, in 2007 Bridgestone brought the medium and hard compounds to Bahrain – this year they will use super soft and medium:
2009 F1 tyre compounds – rounds 1-5
2009 Australian Grand Prix (Albert Park, Melbourne): Super Soft, Medium
2009 Malaysian Grand Prix (Sepang International Circuit): Soft, Hard
2009 Chinese Grand Prix (Shanghai International Circuit): Super Soft, Medium
2009 Bahrain Grand Prix (Bahrain International Circuit): Super Soft, Medium
2009 Spanish Grand Prix (Circuit de Catalunya): Soft, Hard
2008 F1 tyre compounds for the same circuits
For comparison here are the compounds used at those tracks in 2008:
Albert Park: Soft, Medium
Sepang: Medium, Hard
Shanghai: Medium, Hard
Bahrain: Soft, Medium
Catalunya: Medium, Hard