All agree on the rules dudes!!!

The 13 Formula One teams who have entered the 2010 world championship have been told by FIA president Max Mosley that unanimous agreement is required in order to change rules for next season.

According to autosport.com, Mosley has written to members of the Formula One Teams' Association (FOTA) to tell them they need the consent of the five other outfits intending to make the 2010 grid if they want to change the regulations.

Mosley also wrote to the two existing teams outside FOTA, Williams and Force India, as well as new entrants Campos Meta, US F1 and Manor Grand Prix - the latter three having entered F1 with the intention of adhering to the FIA's £40 million budget cap.

FOTA teams threatened to form a breakaway series last month in protest at the latter rule, which they eventually persuaded the FIA to replace with an agreement to reduce spending to levels seen in the early 1990s.

The manufacturer-backed teams that dominate FOTA have promised to provide technical support, including cut-price engines and gearboxes, for the new outfits but Mosley has reminded them that the decision to replace the cap has yet to be formalised.

"Article 66 of the International Sporting Code states that no change can be made to the published regulations without the agreement of all confirmed entrants," the letter to the non-FOTA members read.

"As a result, changes to the 2010 regulations require your agreement and consent.

"I would therefore ask you engage as a matter of urgency with the FOTA teams to seek agreement and to formalise the above principals into suitable contracts and propose a draft set of FIA regulations that all teams are satisfied with.

"Should significant problems arise, I shall be glad to involve the FIA Senate, but I hope this will not be necessary.

"Once these arrangements have been finalised to your satisfaction, you will need to notify the FIA so that the regulations can be formally amended."

With the German Grand Prix to be held this weekend, teams entered in next year's championship are set to meet at the Nurburgring on Wednesday to discuss the new regulations