Vehicle Pneumatic Tires

Abstract

The invention relates to a pneumatic vehicle tire, comprising a tread, which has at least one shoulder-side profile rib (1), which is structured in the manner of lugs and extends peripherally in the circumferential direction and in which incision-like transverse grooves (3) extend in the axial direction, which are each composed of three groove segments (3a, 3b, 3c), a middle groove segment (3a), a groove segment (3b) that extends toward the inside of the tread and ends within the profiled rib (1), and a groove segment (3c) that extends toward the outside of the tread and ends outside of the ground contact area. The transverse grooves (3) extend substantially linearly overall, wherein the middle groove segment (3a) extends over at least 60% of the axial extend of the transverse grooves (3) and has a depth (T), which is substantially constant over the extent of the middle groove segment, of 5 mm to 7 mm and, in cross-section, has two groove flanks (5, 6) extending substantially in the radial direction and having a mutual distance of 0.4 mm to 1.2 mm, wherein a bevel (6a) extending at an angle (β) of 30° to 50° to the radial direction adjoins one of the groove flanks (6) near the rib outer surface, wherein the middle groove segment (3a), continuing the border edges thereof present on the rib outer surface, transitions into the groove segment (3c) extending toward the outside of the tread, which groove segment has an end segment (3'c), which has a U-shaped cross-section and a depth (t2) of 1.0 mm to 1.5 mm.

Description

technical field [0001] The present invention relates to a vehicle pneumatic tire having a tread having at least one shoulder-side rib of block-like structure surrounding in the circumferential direction and formed as a notch-shaped transverse groove in the axial direction The groove runs in the tread rib, and these transverse grooves are respectively composed of three groove segments: a middle groove segment; a groove segment running on the inner side of the tread, the groove segment in the an inner termination of the circumferential region; and a sipe section running outside the tread, the sipe section terminating outside the bottom support surface. Background technique [0002] A pneumatic vehicle tire of this type is known from DE 10 2012 109 712 A1. The circumferential area assigned to the outer shoulder in a tire mounted on a vehicle is a circumferential rib which is separated from the other tread elements by a circumferential groove running around in the circumferenti...

AI Technical Summary

Problems solved by technology

Despite the larger concave volume, the drainage capacity cannot be improved to the desired degree by a transverse groove embodied in this way with a plurality of groove segments arranged at an angle to one another

In addition, the greater concave volume has an adverse effect on the stability of the circumferential ribs on the shoulder side, which has an adverse effect on braking performance on wet and dry road surfaces

Images