In 2008, the tyre regulations stipulate that the two dry tyre specifications must be visibly distinguishable from each other. At the Turkish Grand Prix, the medium compound Bridgestone Potenza tyre was marked with a white line in the second from inside groove. 

Team / Race Driver     Tyre Choice by Stint*:Soft/Medium

Scuderia Ferrari Marlboro          
Kimi Raikkonen            Medium  Medium Hard
Felipe Massa              Medium  Medium Hard

BMW Sauber F1 Team                 
Nick Heidfeld             Hard    Hard   Medium
Robert Kubica             Hard    Hard   Medium

ING Renault F1 Team                
Fernando Alonso           Hard    Hard   Medium
Nelson Piquet             Hard    Hard   Medium

AT&T Williams                      
Nico Rosberg              Hard    Hard   Medium
Kazuki Nakajima           Hard    DNF

Red Bull Racing                    
David Coulthard           Hard    Hard   Medium
Mark Webber               Hard    Hard   Medium

Panasonic Toyota Racing            
Jarno Trulli              Hard    Medium Medium
Timo Glock                Medium  Hard

Scuderia Toro Rosso                
Sebastien Bourdais        Hard    Hard   DNF
Sebastian Vettel          Hard    Hard   Hard Hard Medium

Honda Racing F1 Team               
Jenson Button             Hard    Medium
Rubens Barrichello        Medium  Hard

Force India Formula One            
Adrian Sutil              Medium  Hard   Hard  Hard
Giancarlo Fisichella      Hard    DNF

Team Vodafone McLaren                   
Lewis Hamilton            Hard    Hard   Hard  Medium
Heikki Kovalainen         Hard    Hard   Hard  Medium

* Teams do not necessarily change tyres at pitstops
* Includes drive through penalties