Tire system

A tire system for estimating a tire wear state, comprising:

• a tire side device that is arranged corresponding to the tire provided in a vehicle and transmits data related to the tire;
• and
• a wear estimation unit configured to estimate a tire wear state based on the data related to the tire, wherein
• the tire side device includes a rotation detection unit configured to output a detection signal according to the rotation of the tire, and a first control unit configured to be a distance acquisition unit that calculates a mileage based on the detection signal and to control transmission of the data on the mileage,
• the wear estimation unit includes an information input unit configured to input data and a second control unit configured to estimate the tire wear state using the data input from the information input unit,
• the information input unit inputs data related to the elapsed time since the tire was manufactured as data related to the tire, and estimates the tire wear state based on a tire deterioration degree by using the data related to the mileage and the data related to the elapsed time transmitted from the tire side device,
• the wear estimation unit
• inputs the data related to a tire type in the information input unit,
• transmits the data related to the tire type to the communication center having a database that stores a life performance value that is an index of the difficulty of tire wear of the tire corresponding to the tire type by the second control unit,
• acquires the data related to the life performance value corresponding to the tire type represented by the data related to the tire type transmitted from the communication center, and
• estimates the tire wear state based on the life performance value in addition to the mileage and the tire deterioration degree.

A tire system for estimating a tire wear state, comprising:

• a tire side device that is arranged corresponding to a tire provided in a vehicle and transmits data related to the tire;
• and
• a wear estimation unit configured to estimate a tire wear state based on the data related to the tire, wherein
• the tire side device holds data related to an elapsed time since the tire was manufactured as data related to the tire, and transmits the data related to the elapsed time to the wear estimation unit,
• the wear estimation unit estimates a tire wear state based on a mileage from the start of use of the tire and a tire deterioration degree indicated by the data related to the elapsed time,
• the wear estimation unit includes
• an information input unit configured to input the data related to a tire type, and
• a control unit configured to transmit the data related to the tire type to a communication center having a database that stores a life performance value that is an index on a wear difficulty of the tire corresponding to the tire type, to acquire a data related to the life performance value corresponding to the tire type represented by the data related to the tire type transmitted from the communication center, and to estimate the tire wear state based on the life performance value in addition to the mileage and the tire deterioration degree,
• the control unit is configured to estimate the tire wear state using the data input from the information input unit,
• the information input unit inputs data related to the mileage, and
• the control unit estimates the tire wear state based on the data related to the mileage input from the information input unit and the tire deterioration degree indicated by the data related to the elapsed time transmitted from the tire side device.