| 摘要 |
FIELD: motor vehicle industry.SUBSTANCE: invention relates to automotive industry, in particular, to all-season tires. Pneumatic tire with shoulder blocks (26) has width (W) of any of two types, measured along tire circumference. Tread contact with soil boundary (T) cross section of smaller width (W) shoulder blocks (26) in plane of which lies tire axial center, has shape of rectangular section (34) formed by curve with curvature radius (R) of 10 mm or less, or shape of rectangular section (34) coming down on cone along straight line with length of 10 mm or less. Tread contact with soil boundary (T) cross section of larger width (W) shoulder blocks (26) in plane of which lies tire axial center, has shape of rounded section (38), formed by curve, having radius of curvature (R) from 30 mm to 60 mm in both cases, inclusive. Tread and soil contact boundary (T) of rectangular shape (34) is located closer to side by outer tire width, than rounded (38) tread and soil contact boundary (T).EFFECT: improving tire noiseless with preservation of operating characteristics on snow.6 cl, 3 dwg, 1 ex |
