To provide a tire aging change prediction method predicting the aging change of a tire shape caused by the use of the tire by using a tire model, a tire characteristic prediction method using the prediction method, a tire design method, a tire manufacturing method, a pneumatic tire, and a program executing the tire aging change prediction method.

The tire shape of the pneumatic tire after the aging change is predicted by using the tire shape obtained by applying an internal pressure filling process to an adjustment tire model which has the tire shape of an initial tire model deformed by the internal pressure filling process as the tire model before the internal pressure filling process, and a value adjusting stress acting on the initial tire model by applying the internal pressure filling process to the initial tire model as initial stress.

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