Patent ID: 8960245
Filing Date: 2015-02-24
Classification: B29D,B60C,Y10S,Y10T

Abstract:
1. A pneumatic tire comprising: a toroidal carcass which reaches a bead portion from a tread portion via a side wall portion; a tread rubber which is formed by a nonconductive rubber and is provided in an outer side of the carcass in the tread portion; and a side wall rubber which is formed by the nonconductive rubber and is provided in an outer side of the carcass in the side wall portion, wherein an outer surface of the side wall rubber is provided with a band-like diametrical conductive portion which is formed by a conductive rubber and extends along a tire diametrical direction, an outer end of the diametrical conductive portion is exposed to a ground-contacting surface or is connected to a conductive rubber member which is exposed to the ground-contacting surface, and an inner end of the diametrical conductive portion is exposed to a rim contact region of the bead portion or is connected to a rim strip rubber which is formed by the conductive rubber, and wherein a narrow groove, which is formed by depressing an outer surface of the diametrical conductive portion and extends in a tire diametrical direction, is provided in the side wall portion, and the narrow groove is provided only on the diametrical conductive portion, and wherein the nonconductive rubber of the sidewall does not contain a narrow groove which extends in the diametrical direction.