| 摘要 |
PROBLEM TO BE SOLVED: To provide a tire with lug having performance with concurrent use possible in a paddy field and a field, and in a pavement road, without causing a change of running distance by a slip. SOLUTION: In a pneumatic tire provided with a tread arranging many lugs 4 tilt extended relating to a tire equator in a crown part continued astride between a pair of side wall parts toward an outer side from a width direction central part thereof in both sides of the tire equator alternately and with a space part in a peripheral direction of the tire to designate a tire rotational direction to a successively grounded direction of each lug 4 in an outer side from the center of a tread width direction, in a section in parallel to a tire equator surface, an angle (thereinafter, shown singly tilt angle) dA formed relating to a line segment L connecting a tip end edge E of a side wall 5 in a tread-in side of the lug 4 and a tire rotary axis R is set to 15 deg. or less. Similarly, a tilt angle dB of the lug 4 in an end part region in the tread width direction is set to 30 deg. or more. Further, a tilt angle of the side wall 5 in this tread-in side is gradually increased from the center of the tread width direction, that is, equator O of the tire to the outside. |
