F1 teams could be set to lose control of their advertising signage rights within the pit garages.
Team sponsor signage is commonplace within the confines of the garages, but bosses last week received a letter from Allsport Management.
Allsport is a company contracted by F1 chief executive Bernie Ecclestone to look after certain commercial aspects of the sport - including trackside advertising.
According to GP Week, the letter reminded teams that Allsport is actually in control of the advertising that can be displayed within the garages.
The report said the letter might be a negotiating ploy by Ecclestone in response to those teams pushing for a better tyre deal for 2011.