Abstract: A tire state determination system (100) acquires, from a vehicle (50), state data that includes various types of information that may exert influence on deterioration of a base body portion of a tire (1), and calculates an evaluation value S that indicates a state of the base body portion of the tire (1), based on the acquired state data. This allows an inspector who inspects an applicability to a base tire, to preliminarily grasp, as a material for determining whether it can be used as the base tire, the state of the base body portion of the tire.

Abstract: A tire air pressure management system (100) includes: an acquisition processing portion (61) that acquires an air pressure and an air temperature of a tire (11) attached to a vehicle (1); a correction processing portion (62) that corrects the air pressure that has been acquired by the acquisition processing portion (61) together with the air temperature, based on a difference between the air temperature and a predetermined reference temperature; and a first output processing portion (63) that outputs determination information that is generated based on the air pressure after correction by the correction processing portion (62) and is used to determine whether or not the tire (11) needs air pressure adjustment.

Abstract: A tire management system (100) includes: an acquisition processing portion (62) that acquires state information regarding a state of a pneumatic tire (11) attached to a vehicle (1); a detection processing portion (63) that detects an abnormality of the pneumatic tire (11) based on the state information acquired by the acquisition processing portion (62); and a first output processing portion (64) that, when the detection processing portion (63) has detected the abnormality, outputs first route information to a display portion of a vehicle-mounted communication apparatus (13) of the vehicle (1), wherein the first route information includes a first route that is a route to, among a plurality of predetermined stop spots, a specific stop spot that has a stop space corresponding to a size of the vehicle (1).

Abstract: A tire management system (100) includes: a first communication apparatus (2) that acquires state information regarding a state of a tire (11) that is transmitted from an air pressure detection device (12) provided in a vehicle (1) when the vehicle (1) is located in a communication range of a predetermined wireless communication standard; and a management server (4) including a storage processing portion (70) that stores, into a storage portion (43), the state information acquired by the first communication apparatus (2).