Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Societe Detechnologie Michelin

Compagnie Generale Des Establissements Michelin

Nicolas Jamot

Arnaud Frappart

Sébastien Fugier

Bertrand Fraenkel

The invention relates to an asymmetric tread for a tire comprising a plurality of basic patterns, for each of which there is defined a sipes density corresponding to where i is the number of sipes in the pattern, li is the length of the isipe on the tread surface, P is the pitch of the basic pattern and Wm is the width of the basic pattern, a sipes orientation level corresponding to where &#x3b1;i is the positive or negative angle formed on the tread surface by the isipe with the transverse direction and |&#x3b1;i|&#x2264;45 degrees and a steering pull criterion for the basic pattern corresponding to The sipes density is greater than or equal to 60 &#x3bc;m/mm, the sipes orientation level is greater than or equal to 1.5 degrees/mm and the steering pull criterion for the pattern is less than or equal to 0.2. The tread comprises an inboard half-tread adjacent to an inboard sidewall of the tire, the sipes orientation level relating to the inboard half-tread being greater than 2 degrees/mm.

Tire tread

Pneumatic tire

Growing community of inventors

Clermont-Ferrand, France

Nicolas Jamot