"If we can't find agreement within FOTA on that then what is the purpose of FOTA?"
FOTA currently includes all but one of the 12 teams, with tail-enders HRT leaving last year, and acts as a united voice in talks with Formula One's commercial supremo Bernie Ecclestone and the governing FIA.
The Concorde Agreement is a confidential contract between teams, commercial rights holder and FIA that runs the business side of the sport including distribution of revenues -- a perennial sore point.
The RRA is an agreement between FOTA members to keep spending in check to allow smaller teams to remain competitive and protect the sport as a whole in the face of global financial difficulties.
Both agreements are coming up for renewal.
Asked whether there was a risk to FOTA, Horner said: "If a solution isn't found on the direction the teams want to go in, then yes.
"They are the fundamental issues that need to be addressed."