PROTRUDING KNURLING UNIT AND TIRE INCLUDING THE SAME

A protruding knurling unit includes: a first knurling portion extending at an incline with respect to a bottom surface; and a plurality of second knurling portions each extending at an incline with respect to the bottom surface. The first knurling portion includes a first knurling portion bottom. Each of the plurality of second knurling portions includes a second knurling portion bottom. A distance between the second knurling portion bottoms of the plurality of second knurling portions is shorter than a length of the first knurling portion bottom.