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Wheels and tyres

Formula One cars must have four, uncovered wheels, all made of the same metallic material. Front wheels must be between 305 and 355mm wide, the rears between 365 and 380mm.

With tyres fitted the wheels must be no more than 660mm in diameter (670mm with wet-weather tyres). Measurements are taken with tyres inflated to 1.4 bar.

Wheels and tyres - Scuderia Toro Rosso wheel. Formula One World Championship, Rd 4, Spanish Grand Prix, Qualifying Day, Barcelona, Spain, Saturday 12 May 2007. World © Sutton