| 摘要 |
PURPOSE: A pneumatic tire with improve noise performance is provided to improve noise performance by making stiffness of blocks in a unit pitch formed to a tread part of the tire different. CONSTITUTION: In a pneumatic tire with improved noise performance, a tread(1) is divided into blocks of different sizes, and the blocks are arranged in different pitches. Sidewall parts are formed on both sides of the tread. A bead part is formed at the end portion of each sidewall part. Kerfs(15) different in the length, depth, and shape are formed to large, middle, and small blocks(11,12,13) of the same pitch, and thus the block stiffness in the same pitch is differently formed. Accordingly, noise is reduced while maintaining the pitches of the blocks formed to the tread part.
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