ARITHMETIC MODEL GENERATION SYSTEM, WEAR AMOUNT ESTIMATION SYSTEM, AND ARITHMETIC MODEL GENERATION METHOD

An arithmetic model generation system 100 includes a tire information acquisition unit 31, a position information acquisition unit 32, a wear amount calculator 33, and an arithmetic model update unit 34. The tire information acquisition unit acquires tire data including a temperature and pressure of a tire 10. The position information acquisition unit 32 acquires position data for a vehicle on which the tire 10 is mounted. The wear amount calculator 33 includes an arithmetic model 33b that calculates a tire wear amount based on the temperature, pressure, and position, the wear amount calculator 33 calculating a wear amount of the tire 10 by using the arithmetic model 33b by inputting the tire data and the position data corresponding to the tire data. The arithmetic model update unit 34 compares the wear amount measured in the tire with the wear amount calculated by the wear amount calculator 33 and updates the arithmetic model 33b accordingly.