Patent ID: 9150056
Filing Date: 2015-10-06
Classification: B60C

Abstract:
1. A pneumatic tire comprising a tread portion having tread edges and a tread width therebetween and provided with a pair of straight circumferential grooves disposed one on each side of the tire equator, a plurality of oblique grooves extending axially outwardly from the circumferential grooves while inclining to one circumferential direction and terminating without reaching to the tread edges, wherein a width of each of the oblique grooves is gradually decreased from its axially inner end connected to one of the circumferential grooves to its axially outer terminal end, and an inclination angle θ a plurality of lug grooves extending axially outwardly beyond the tread edges from positions axially outside the circumferential grooves while inclining to one circumferential direction same as the oblique grooves, wherein the lug grooves include first lug grooves each composed of an axially inner steeply-inclined part and an axially outer mildly-inclined part which are connected to each other through an arc-shaped part to have a bent groove configuration, and second lug grooves each extending along said mildly-inclined part, wherein the first lug grooves each have its axially inner end at an axial distance La of from 8 to 12% of the tread width from the circumferential groove, the steeply-inclined part extends axially outwardly from said axially inner end while inclining at an angle θ the angle θ the axially outer mildly-inclined part is inclined at an angle θ between every two of the circumferentially adjacent oblique grooves, one first lug groove and one second lug groove are disposed.