In 2009, the tyre regulations stipulate that the two dry tyre specifications must be visibly distinguishable from each other. At the Turkey Grand Prix, the soft compound Bridgestone Potenza tyres were marked with green bands on the sidewalls. The wet weather tyre was also marked with a green line in a groove. 

Tyre Choice by Stint*: Hard or Soft Compound

Scuderia Ferrari                
Felipe Massa         6th    Hard   Hard   Soft
Kimi Raikkonen       9th    Hard   Hard   Soft

Vodafone McLaren                
Lewis Hamilton       13th   Hard   Soft
Heikki Kovalainen    14th   Soft   Hard   Soft

BMW Sauber F1 Team              
Robert Kubica        7th    Hard   Hard   Soft
Nick Heidfeld        11th   Hard   Hard   Soft

ING Renault F1 Team             
Fernando Alonso      10th   Soft   Hard   Hard
Nelson Piquet        16th   Hard   Hard   Soft

Panasonic Toyota                
Jarno Trulli         4th    Hard   Hard   Soft
Timo Glock           8th    Hard   Hard   Soft

Scuderia Toro Rosso             
Sebastien Bourdais   18th   Hard   Soft
Sebastien Buemi      15th   Hard   Hard   Soft

Red Bull Racing                 
Mark Webber          2nd    Hard   Hard   Soft
Sebastian Vettel     3rd    Hard   Hard   Hard   Soft

AT&T Williams                   
Nico Rosberg         5th    Hard   Hard   Soft
Kazuki Nakajima      12th   Hard   Hard   Soft

Force India F1 Team             
Adrian Sutil         17th   Hard   Hard   Soft
Giancarlo Fisichella DNF    Hard

Brawn GP F1 Team                
Jenson Button        1st    Hard   Hard   Soft
Rubens Barrichello   DNF    Hard   Hard   Soft

* Teams do not necessarily change tyres at pitstops
* Includes drive-through/stop-go penalties