FIA President Mohammed Ben Sulayem said on social media on Monday that an "inflated price tag" was being put on F1Formula 1's owners have accused the head of motorsport's governing body of making "unacceptable" remarks about the championship's value.FIA president Mohammed Ben Sulayem on Monday described $20bn (£16.2bn) as an "inflated price tag being put on F1".A letter sent by F1 and owner Liberty Media to the FIA says the remarks "overstep the bounds of both the FIA's remit and its contractual rights".It added that the FIA "may be liable" for any damage to Liberty's value.The letter, sent on Tuesday,…