Melbourne - A row was looming ahead of the start of the Formula One season with leading teams questioning the legality of the bodywork of three of their rivals including newcomers Brawn GP.
A rift appeared to open Wednesday ahead of Sunday's Australian Grand Prix in Melbourne, with Red Bull saying it would lodge a protest if the Brawn GP, Williams and Toyota cars were allowed to race as they now stand.
Governing body FIA is set to check whether the cars conform to the regulations on Thursday.