Patent ID: 8530575

Claim:
A tire having sidewall, case and clinch, wherein the sidewall comprises (A) a rubber composition for sidewall comprising (A1) a rubber component comprising (a1) 35 to 65% by mass of a natural rubber and/or an isoprene rubber, (a2) 15 to 55% by mass of a modified butadiene rubber and (a3) 0 to 50% by mass of other rubber, and (A2) 20 to 40 parts by mass of filler based on 100 parts by mass of the rubber component (A1), in which complex elastic modulus E* measured at 70° C. is 2.0 to 3.5 MPa and loss tangent tan δ is less than 0.12, case cord is covered with (B) a rubber composition for covering case cord comprising (B1) a rubber component comprising (b 1) 50 to 80% by mass of a natural rubber and/or an isoprene rubber, (b2) 20 to 45% by mass of at least one diene rubber selected from a group comprising a modified styrene-butadiene rubber, a modified butadiene rubber and an epoxidized natural rubber and (b3) 0 to 30% by mass of other rubber, and (B2) 20 to 40 parts by mass of a filler, based on 100 parts by mass of the rubber component (B1), in which complex elastic modulus E* measured at 70° C. is 2.0 to 3.5 MPa and loss tangent tan δ is less than 0.12, wherein the filler (B2) is a combination of silica and carbon black, in which carbon black has a nitrogen adsorption specific surface area (N 2 SA) of 20 to 45 m 2 /g, and the mass ratio of silica to carbon black is 10/1 to 1/1, and the clinch comprises (C) a rubber composition for clinch comprising (C1) a rubber component comprising (c1) 30 to 50% by mass of a natural rubber and/or an isoprene rubber, (c2) 15 to 70% by mass of a modified butadiene rubber and (c3) 0 to 55% by mass of other rubber, and (C2) 35 to 80 parts by mass of filler based on 100 parts by mass of the rubber component (C1), in which complex elastic modulus E* measured at 70° C. is 4.5 to 9.0 MPa and loss tangent tan δ is less than 0.12.