A pneumatic tire comprising: a tread portion comprising a first tread pattern formed between a tire equator (Co) and one of tread edges, and a second tread pattern formed between the tire equator (Co) and the other one of the tread edges; the first tread pattern and the second pattern being formed as substantially symmetrical design with respect to the tire equator (Co), the first tread pattern and the second pattern being arranged such that pattern phases thereof are shifted one another in a circumferential direction of the tire, each of the first tread pattern and the second tread pattern being provided with a plurality of lateral inclined grooves each extending axially inwardly with an inclination from the tread edge to an axially inner end located near the tire equator (Co) without reaching the tire equator (Co), an axially inner connecting groove having an opposite inclination to the inclination of the lateral inclined grooves and connecting between a pair of circumferentially adjacent lateral inclined grooves, and an axially outer connecting groove having an opposite inclination to the inclination of the lateral inclined grooves and connecting between a pair of circumferentially adjacent lateral inclined grooves; and a plurality of central connecting grooves arranged axially inward of the inner connecting grooves of the first and second tread patterns (P1, P2), each central connecting groove extending across the tire equator (Co) and connecting one of the lateral inclined grooves arranged on the first tread pattern with one of the lateral inclined grooves arranged on the second tread pattern, characterized in that each of the lateral inclined grooves comprises a groove center line, the groove center line comprises an intersection point A with the tread edge, an intersection point B with an axially inner end of the outer connecting groove, an intersection point C with an axially inner end of the inner connecting groove and an intersection point D with the central connecting groove, and angles θab, θbc and θcd satisfy the following relations: θ ⁢ ab < θ ⁢ bc < θ ⁢ cd, 25 deg. < θ ⁢ ab < 35 deg., 45 deg. < θ ⁢ bc < 55 deg., and 55 deg. < θ ⁢ cd < 65 deg., where "θab" is an angle of a segment AB extending from the point A to the point B with respect to an axial direction of the tire, "θbc" is an angle of a segment BC extending from the point B to the point C with respect to the axial direction of the tire, and "θcd" is an angle of a segment CD extending from the point C to the point D with respect to the axial direction of the tire. a tread portion comprising a first tread pattern formed between a tire equator (Co) and one of tread edges, and a second tread pattern formed between the tire equator (Co) and the other one of the tread edges; the first tread pattern and the second pattern being formed as substantially symmetrical design with respect to the tire equator (Co), the first tread pattern and the second pattern being arranged such that pattern phases thereof are shifted one another in a circumferential direction of the tire, each of the first tread pattern and the second tread pattern being provided with a plurality of lateral inclined grooves each extending axially inwardly with an inclination from the tread edge to an axially inner end located near the tire equator (Co) without reaching the tire equator (Co), an axially inner connecting groove having an opposite inclination to the inclination of the lateral inclined grooves and connecting between a pair of circumferentially adjacent lateral inclined grooves, and an axially outer connecting groove having an opposite inclination to the inclination of the lateral inclined grooves and connecting between a pair of circumferentially adjacent lateral inclined grooves; and a plurality of central connecting grooves arranged axially inward of the inner connecting grooves of the first and second tread patterns (P1, P2), each central connecting groove extending across the tire equator (Co) and connecting one of the lateral inclined grooves arranged on the first tread pattern with one of the lateral inclined grooves arranged on the second tread pattern, characterized in that each of the lateral inclined grooves comprises a groove center line, the groove center line comprises an intersection point A with the tread edge, an intersection point B with an axially inner end of the outer connecting groove, an intersection point C with an axially inner end of the inner connecting groove and an intersection point D with the central connecting groove, and angles θab, θbc and θcd satisfy the following relations: θ ⁢ ab < θ ⁢ bc < θ ⁢ cd, 25 deg. < θ ⁢ ab < 35 deg., 45 deg. < θ ⁢ bc < 55 deg., and 55 deg. < θ ⁢ cd < 65 deg., where "θab" is an angle of a segment AB extending from the point A to the point B with respect to an axial direction of the tire, "θbc" is an angle of a segment BC extending from the point B to the point C with respect to the axial direction of the tire, and "θcd" is an angle of a segment CD extending from the point C to the point D with respect to the axial direction of the tire.