In 2009, the tyre regulations stipulate that the two dry tyre specifications must be visibly distinguishable from each other. At the Japanese 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*:

Soft or Hard dry, Intermediate or Wet

Scuderia Ferrari          
Giancarlo Fisichella 12th  Soft Soft Hard
Kimi Raikkonen       4th   Hard Soft Soft

Vodafone McLaren          
Lewis Hamilton       3rd   Soft Hard Soft
Heikki  Kovalainen   11th  Soft Hard Soft

BMW Sauber F1             
Robert Kubica        9th   Hard Hard Soft
Nick Heidfeld        6th   Soft Hard Soft

ING Renault F1 Team        
Fernando Alonso      10th  Hard Soft
Romain Grosjean      16th  Hard Soft

Panasonic Toyota          
Jarno Trulli         2nd   Hard Hard Soft
Timo Glock           Withdrawn

Scuderia Toro Rosso            
Jaime Alguersuari    DNF   Hard Hard Soft
Sebastien Buemi      DNF   Soft

Red Bull Racing           
Mark Webber          17th  Soft Hard Hard Hard Soft Soft
Sebastian Vettel     1st   Hard Hard Soft

AT&T Williams             
Nico Rosberg         5th   Hard Hard Soft
Kazuki Nakajima      15th  Hard Soft

Force India F1 Team           
Adrian Sutil         13th  Soft Hard Soft
Vitantonio Liuzzi    14th  Hard Hard Soft

Brawn GP F1 Team              
Jenson Button        8th   Hard Hard Soft
Rubens Barrichello   7th   Hard Hard Soft

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