IROK ND | Interco TireThe IROK ND has the same performance characteristics as the famous IROK with one major difference. The IROK has a directional tread design and The IROK ND has a non directional tread. This gives The IROK ND the same traction in forward and in reverse which is popular in the smaller light truck tires used in construction and farming operations when reverse traction is as important as forward traction. The IROK ND uses the famous Three Stage Lug design