To provide a sales method of tires with which the marketing of tires is conducted without a sales booth and tailored information is quickly provided to a customer.

In a sales method of tires at a gas supply station (GSS), information on tires of the car of a customer who fills the car at a GSS including the size shown on the side surfaces of the tires is visually obtained, recorded and inputted to a computer placed inside of the GSS. The prices of various kinds of tires which are equivalent to or alternatives of the customer's tires, various discount rates for each of various kinds of campaigns with respect to the prices of the various kinds of tires and discount prices calculated based on the discount rates, the average retail prices of the various kinds of tires, and the feature information on and images of the same kind of tire as the customer's tires or the various kinds of tires are promptly printed out, and handed to the customer while the customer is filling his/her car.