A tire comprising a tread portion, wherein the tread portion includes a ground contacting surface, and at least one first groove opening at the ground contacting surface, a tread rubber forming the tread portion includes a first rubber layer not exposed at the ground contacting surface and a second rubber layer connected to the first rubber layer on an outer side in a tire radial direction, the or each first groove includes a first groove edge, the first groove edge being one of two groove edges of the or each first groove appearing on the ground contacting surface, a groove bottom surface located radially inside the second rubber layer, and a first groove wall connecting the first groove edge and the groove bottom surface, in a lateral cross section of the or each first groove, the first groove wall includes a first wide top portion arranged between the first groove edge and the groove bottom surface, the first wide top portion is located outside the first groove edge in a groove width direction of the or each first groove, and the first wide top portion is positioned in the second rubber layer; characterized in that the or each first groove has a groove width measured at a depth of the first wide top portion in a range from 100% to 120% of the groove width measured at the ground contacting surface; and the second rubber layer has a complex elastic modulus E*2 smaller than a complex elastic modulus E*1 of the first rubber layer, wherein the complex elastic modulus E* is a value measured by using a viscoelastic spectrometer under the following conditions according to Japanese Industrial Standard JIS-K6394: Initial strain: 10%; Amplitude: ±2%; Frequency: 10Hz; Deformation Mode: Tensile; Measurement temperature: 30°C the tread portion includes a ground contacting surface, and at least one first groove opening at the ground contacting surface, a tread rubber forming the tread portion includes a first rubber layer not exposed at the ground contacting surface and a second rubber layer connected to the first rubber layer on an outer side in a tire radial direction, the or each first groove includes a first groove edge, the first groove edge being one of two groove edges of the or each first groove appearing on the ground contacting surface, a groove bottom surface located radially inside the second rubber layer, and a first groove wall connecting the first groove edge and the groove bottom surface, in a lateral cross section of the or each first groove, the first groove wall includes a first wide top portion arranged between the first groove edge and the groove bottom surface, the first wide top portion is located outside the first groove edge in a groove width direction of the or each first groove, and the first wide top portion is positioned in the second rubber layer; the or each first groove has a groove width measured at a depth of the first wide top portion in a range from 100% to 120% of the groove width measured at the ground contacting surface; and the second rubber layer has a complex elastic modulus E*2 smaller than a complex elastic modulus E*1 of the first rubber layer, wherein the complex elastic modulus E* is a value measured by using a viscoelastic spectrometer under the following conditions according to Japanese Industrial Standard JIS-K6394: Initial strain: 10%; Amplitude: ±2%; Frequency: 10Hz; Deformation Mode: Tensile; Measurement temperature: 30°C