A tire with radial or bias carcass

Abstract

According to the present invention is provided a tire (1) for a rolling assembly comprising a rim and a tire, the tire (1) comprising at least one carcass reinforcement (2), a crown reinforcement (3)being disposed radially outward of the carcass reinforcement (2) and being made up of at least one layer of reinforcing elements, a tread (4) being placed radially outward of the crown reinforcement (3) and having two axially outermost ends, at least one of the axially outermost end of the tread (4) comprising a circumferential groove (5), the tread (4) being connected by two sidewalls (6) to twobead zones (7) each comprising at least one circumferential reinforcing element (7a), at least one sidewall (6) comprising, on its exterior surface, a series of protuberances (8) alternating with voids (9), each protuberance (8) having a height, a length and a width being positioned at the surface of the sidewall (6), each the protuberance (8) comprising a base part (81) having a height and formedon the exterior surface of the sidewall (6) and a top part (82) extending outwardly from the base part (81) and having a top surface (82a) spaced outwardly from the exterior surface of the sidewall (6), the tire being characterized in that the top surface (82a) comprises at least one inclined face (83) axially inwardly inclined and a remaining face (82b) connected to the inclined face (83) by a connecting part (84), and in that a height of the protuberance (8) from the exterior surface of the sidewall (6) is maximal at the connecting part (84).

Description

technical field [0001] The present invention relates to a tire, in particular to a tire having a radial or offset carcass. Background technique [0002] Radial tires are increasingly used in various markets, especially the passenger car tire market. This success is due in particular to the durability, comfort and low rolling resistance properties of Radial Technology. [0003] The main parts of a tire are the tread, sidewalls and beads. The beads are intended to be in contact with the rim. In tires with radial technology, each of the main components constituting the tire, namely the tread, sidewalls and beads, is clearly assigned to each other and therefore has a known specific configuration. [0004] A radial tire is necessarily reinforced by a carcass reinforcement comprising at least one carcass ply arranged at an angle substantially equal to 90° with respect to the circumferential direction of the tyre. This carcass reinforcement is overlaid radially on the outside a...

AI Technical Summary

Problems solved by technology

This small protruding line obviously has a detrimental effect on the protrusion and the aesthetics of the tire

Venting from the molded element can also be achieved, for example, by making the outermost side of the protrusions have a smooth sloping and / or curved surface (wherein the height of such protrusions will be greatest in this outermost side), but the air removal efficiency still not enough

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