Even if "Raetian" was the ancestral language of the Raeti, there is considerable uncertainty as to how widely "Raetian" was spoken among the tribes by the time of Augustus (ruled 30 BC - AD 14).
Isegi kui "reedi keel" oli reetide esialgne keel, on märkimisväärne ebakindlus selles osas, kui laialt "reedi keelt" hõimudes Augustuse ajal (valitses 30 eKr – 14 pKr) kõneldi.