Patent ID: 8257530

Claim:
A method of using tires for motorcycle, comprising: mounting a front tire to the front wheel of a motorcycle, a tread portion of which front tire is divided in the tire widthwise direction into three regions comprising the center tread region including the tire equatorial plane and respective shoulder tread regions each including a tread ground contact end, only two different types of tread rubber being used for the tread portion of the front tire, JIS-A hardness of tread rubber of the center tread region being larger than JIS-A hardness of tread rubber of each shoulder tread region in the front tire; and mounting a rear tire to the rear wheel of the motorcycle, a tread portion of which rear tire is divided in the tire widthwise direction into five regions comprising the center tread region including the tire equatorial plane, respective shoulder tread regions each including a tread ground contact end, and respective intermediate tread regions each interposed by the center tread region and the corresponding shoulder tread region, three different types of tread rubber being used for the tread portion of the rear tire, JIS-A hardness of tread rubber of the intermediate tread region being larger than JIS-A hardness of tread rubber of the center tread region and JIS-A hardness of tread rubber of each shoulder tread region in the rear tire.