In 2007, the tyre regulations stipulate that the two dry tyre specifications must be visibly distinguishable from each other. For the Japanese Grand Prix weekend, the soft compound Bridgestone Potenza tyre was marked with a white line in the second from inside groove. Wet and EWet tyres were used during the Japanese Grand Prix.

Team Race Driver Tyre by Stint*: Wet or EWets  

ING Renault F1 Team
Giancarlo Fisichella      EWet - EWet
Heikki Kovalainen         EWet - EWet

Scuderia Ferrari             
Felipe Massa              Wet - EWet - EWet - EWet - EWet
Kimi Raikkonen            Wet - EWet - EWet - EWet

Vodafone McLaren Mercedes             
Fernando Alonso           EWet - EWet / DNF
Lewis Hamilton            EWet - EWet

Honda Racing F1 Team                  
Jenson Button             EWet - EWet
Rubens Barrichello        EWet - EWet - EWet

BMW Sauber F1 Team                    
Nick Heidfeld             EWet - EWet
Robert Kubica             EWet - EWet - EWet

Panasonic Toyota Racing               
Ralf Schumacher           EWet - EWet - EWet - EWet / DNF
Jarno Trulli              EWet - EWet - EWet

Red Bull Racing                       
David Coulthard           EWet - EWet
Mark Webber               EWet - EWet / DNF

AT&T Williams Team                    
Nico Rosberg              EWet - EWet - EWet / DNF
Alex Wurz                 EWet - EWet / DNF

Scuderia Toro Rosso                   
Vitantonio Liuzzi         EWet - EWet - EWet
Sebastian Vettel          EWet - EWet / DNF

Etihad Aldar Spyker F1           
Adrian Sutil              EWet - EWet
Sakon Yamamoto            EWet - EWet - EWet

Super Aguri F1 Team                   
Takuma Sato               EWet - EWet - EWet - EWet
Anthony Davidson          EWet - EWet / DNF

*  Teams did not necessarily change tyres at pitstops.
EWet = Extreme Wet