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1. (WO2017170208) TIRE

Pub. No.:    WO/2017/170208    International Application No.:    PCT/JP2017/011966
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Sat Mar 25 00:59:59 CET 2017
IPC: B60C 11/13
B60C 11/03
B60C 11/12
Applicants: BRIDGESTONE CORPORATION
株式会社ブリヂストン
Inventors: MATSUNAGA Midori
松永 翠
Title: TIRE
Abstract:
A tire (1) is provided, on the tread portion (10) thereof, with groove parts (70) extending in the tire circumferential direction (TC); first land parts (81) positioned to the inside in the tire width direction (TW), and having first groove walls (71) forming the groove parts (70); and second land parts (82) having second groove walls (73). Protrusions (100) extending contiguously from the first groove walls (71) to the second groove walls (73) are provided at the groove bottoms (72) of the groove parts (70). In a tread surface view, the protrusions (100) are provided with a linear portion (110) and a curved portion (120) that is contiguous with the linear shaped portion (110). A slit (200) crossing the protrusion (100) is formed in at least one of the end parts (100a, 100b) of the protrusions (100). Shallow grooves (300) which extend less deeply in the radial direction (TD) of the tire than the groove parts (70) and at an angle with respect to the tire width direction (TW) are provided in the first land parts (81). The linear portions (110) of the protrusions (100) extend at an angle in the same direction, with respect to the tire circumferential direction (TC), as the shallow grooves (300) extending at an angle.