Pneumatic tire

A pneumatic tire having a tread portion, wherein

• the tread portion comprises a tread rubber forming a ground contacting surface, and a band layer disposed radially inside the tread rubber,
• the tread rubber is provided with a first circumferential groove extending continuously in the tire circumferential direction in the ground contacting surface,
• the band layer comprises band cords arranged substantially parallel to the tire circumferential direction, and a topping rubber covering the band cords,
• wherein
• the band cords are each formed by twisting together a first yarn and a second yarn,
• the first yarn is formed by twisting first filaments together,
• the second yarn is formed by twisting second filaments together,
• an elastic modulus of each of the second filaments is lower than an elastic modulus of each of the first filaments,
• the first filaments and the second filaments are formed from organic fibers,
• a total fineness of each band cord is not more than 4400 dtex,
• a stress σ1 of each band cord when elongated by 3% is not more than 0.03 (N/tex), and a stress σ2 of the band cord when elongated by 5% is 0.04 to 0.06 (N/tex), wherein the stress σ1 and the stress σ2 are measured by a method specified in Japanese Industrial Standards (JIS) L1017,
• in a region radially inside the first circumferential groove, a maximum thickness t1 of the topping rubber on the radially outer side of the band cords is not more than 1.0 mm,
• a minimum distance d1 from the bottom of the first circumferential groove to the radially outer surface of the band layer is not more than 2.0 mm, and
• a distance d2 in a tire normal direction from a groove edge of the first circumferential groove to the radially outer surface of the band layer is not more than 15.0 mm.