Tire pressure indicator

System and methods for indicating a tire pressure condition are disclosed. Some systems (200; 300; 730) and methods include receiving, by a control unit (30) comprising a processor (220; 312) and a tangible, non-transitory memory (314), a tire pressure data, determining, by the control unit (310), a relationship of the tire pressure data to a predetermined tire pressure, and causing, by the control unit (310), an output device (230) to display a value in accordance with the relationship, wherein the output device (230) is externally located on an aircraft (100).