PNEUMATIC TIRE

The outer diameter of the pneumatic tire (10) is 350 mm or more and 600 mm or less, and as RW is defined by a rim width of a rim wheel assembled to the pneumatic tire and SW is defined by a tire width of the pneumatic tire, the relation of 0.78 ≤ RW/SW ≤ 0.99 is satisfied, and at least two circumferential main grooves extending to the tire circumferential direction are formed in the tread. The circumferential main groove is formed closer to a tire equatorial line (CL) than an outer end in the tire width direction of the belt layer.