Vehicle pneumatic tire has roll direction turned away flank surface inclined to radial direction, which changes over extended groove continuously and flank surface includes its largest angle with radial direction with extended groove

摘要

Vehicle pneumatic tire has roll direction turned away flank surface inclined to the radial direction, which changes over groove (6) continuously. The flank surface includes its largest angle with radial direction with peripheral groove (2). The groove comprises an angle of at most 45[deg] with circumferential direction, and whereby two flank surfaces (5,7) turns into each other over a curvature at the base of groove. The flank surface is curved in an arc-shaped opposite to flank surface, which proceed in radial direction in plan view, continuously descends into the extended groove limiting flank surface.