Patent ID: 9174499
Filing Date: 2015-11-03
Classification: B60C

Abstract:
1. A pneumatic tire in which turbulent-flow generating projections each extending from an inner circumference side to an outer circumference side, and provided on an outer tire surface at intervals in a tire circumferential direction, wherein: each of the turbulent-flow generating projections includes an edge portion when being viewed in a cross-sectional shape taken along a direction perpendicular to an extending direction thereof; and a front wall angle formed between a front wall face of each turbulent-flow generating projection and the tire surface is set in the range of 70° to 110°, the front wall face being hit by an airflow, wherein the turbulent-flow generating projections are provided in a tire side portion, wherein relationships of 8.0≦p/h≦50.0 and 10.0≦(p−w)/w≦50.0 are satisfied where: h denotes the height of each of the turbulent-flow generating projections; p denotes a pitch of adjacent ones of the turbulent-flow generating projections in a tire rotation direction; and w denotes a lower side width of each of the turbulent-flow generating projections in the cross-sectional shape, wherein the turbulent-flow generating projections are provided at regular intervals in the tire circumferential direction, wherein the pneumatic tire is a heavy-duty tire specified by the standards determined by The Tire and Rim Association, Inc. Year Book in the United States of America.