To provide a manufacturing method of a brass-plated steel wire which is excellent in the initial adhesive performance and the durable adhesiveness to a rubber under a dry environment and a humid and hot environment, and consistently manufactured in an industrial manner, a steel cord having excellent adhesiveness to a rubber, and a tire using the same.

In the manufacturing method, a brass-plated steel wire is manufactured via a wet drawing process by a multi-stage slip type wire drawing machine. The steel wire is drawn by using one or more dies 14a-14c in the final stage of the multi-stage slip type wire drawing machine with the Cu content of the brass-plating of the steel wire being 55-62%. A sintered diamond die is used at least for a die 114c on the most downstream side out of one or more dies, and the reduction rate of area of the die 14c on the most downstream side is below 2%.