The invention discloses a tire and a production method thereof. The tire includes a tread and sidewalls. The two sides of the tread are connected to the sidewalls on the left and right sides. The sidewalls are recessed inwardly to form multiple grooves. The grooves on the sidewalls on the two sides are staggered. Each groove on one of the sidewalls is located between the two corresponding grooveson the other sidewall in a radial direction of the tire. The two ends of each groove on one of the sidewalls communicates with the corresponding two adjacent grooves on the other sidewall. The production method fills a tire mold with a wheel hub, clamps the mold, casts a liquid foaming material from a casting hole of the inner ring of the wheel hub, and rotates the mold at high speed to make the foaming material fully fill a forming chamber so as to form the tire in the wheel hub. After the structure and method are adopted, in actual application, when the tire of the invention travels, air enters the groove on one side and flows out from the grooves on the other side to take away heat inside the tire, which avoids the heat accumulation and heartburn inside the tire and improves the heat dissipation performance of the tire, thereby prolonging the service life of the tire.