| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire reduced in noise (pattern noise) and excellent in driving stability. SOLUTION: Pitch numbers are made to be different with auxiliary grooves in respective land part rows. When the land part rows are set as a land part row 1, a land part row 2, ... a land part row N in sequence from an inner side when installed on a vehicle, the numbers of pitches in the respective land part rows are (the land part row 2)>(the land part row 1)=(a land part row 3) (N=3), (the land part row 2)=(the land part row 3)>(the land part row 1)=(a land part row 4) (N=4), (the land part row 3)>(the land part row 2)=(the land part row 4)>(the land part row 1)=(a land part row 5) (N=5), and (the land part row 3)=(the land part row 4)>(the land part row 2)=(the land part row 5)>(the land part row 1)=(a land part row 6) (N=6). COPYRIGHT: (C)2007,JPO&INPIT |
