Motor racing's governing body was meeting Tuesday to decide on the legality of a car part that helped Brawn GP's Jenson Button win the season's opening two races. FIA officials went into closed-door hearings about the rear diffusers at its Paris headquarters, and were expected to hand down a ruling early Wednesday. The result could throw the Formula One championship into disarray. Ferrari, BMW Sauber, Renault and Red Bull have all lodged appeals to FIA against the stewards' decision in Australia and Malaysia to allow Brawn GP, Toyota and Williams to race with rear diffusers that could breach new aerodynamic regulations. The diffusers, an under-car device that channels the flow of air from the front to rear, help create greater downforce through corners. Brawn GP, Toyota and Williams have dominated the F1 championship's opening two races.
