Williams has now joined F1 rival Spyker in publicly threatening legal action against teams intending to use cars they did not design in 2007.
The British authoritative newspaper ‘The Guardian’ said Sir Frank Williams is “ready” to take the controversy – which centres around the plans of Toro Rosso and Super Aguri – to the International Chamber of Commerce in Switzerland for arbitration.
“I am adamantly opposed to chassis sharing and we at Williams do not believe it is legal under the current rules,” Williams, the Grove based team’s principal and co-owner, said.
“As far as I’m concerned it is absolutely in the regulations in black and white that every team must make its own chassis.”
Toro Rosso’s Gerhard Berger hit back at Williams’ stance, accusing the 64-year-old of being am amateur “policeman”, but Sir Frank also warned David Richards not to tread a similar route even next year.
Referring to official 2008 entrant Prodrive’s plans to buy a complete car to race with next year, Williams said: “In the presently issued rules for 2008, customer cars are not yet a done deal.”