| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire that can improve performance against noise while improving drainage property and uneven wearing resistant property. SOLUTION: At least an edge portion 4x where a lug groove wall surface 4a of a block 4 facing to a lug groove 3 and a block surface 4b are in contact with each other includes a straight line M for connecting a groove bottom point a of a first ridgeline Q where the wall surface 4a and a groove wall surface 4c in the inner circumference direction facing to a circumferential groove 2 abutted on the inside in the tire width direction of the block 4 are in contact with each other, and an outside edge B in the tire width direction of a second ridgeline R where the wall surface 4a and the block surface 4b are in contact with each other, and is chamfered by an inclined surface 5 intersecting with a third ridgeline S where the surface 4b and the surface 4c are in contact with each other. COPYRIGHT: (C)2005,JPO&NCIPI |
