A pneumatic tire with circumferential grooves on the outer side wall

A pneumatic tire 1 has a non-symmetric pattern in which a land ratio Lo of an outer tread surface portion To facing towards outside of a vehicle from a tire equator C is set to be larger than a land ratio Li of an inner tread surface pattern Ti facing towards inside of the vehicle from the tire equator C; concave grooves 9 extending substantially in a circumferential direction of the tire are formed in an outer tire side region Yo that is located between a grounding end Eo of the outer tread surface portion To and a maximum width position M of the tire facing towards outside of the vehicle.