A tire has a tread comprising at least two tread pattern elements (MA, MB) distributed periodically in the circumferential direction at pitches (PA, PB). Each tread pattern element is formed of three portions (Z1, Z2, Z3), each defining a volumetric element of which the trailing edge corner is the one common to the tread surface and is the last to leave the contact patch in which the tire is in contact with the ground. With each trailing edge corner being chamfered, in the portions Z1 and/or Z2, and/or Z3, the widths of the chamfers of the trailing edge corners (LCiA, LCiB, i ranging from 1 to 3) ef satisfy the following inequalities: a)0.8*PAPB≤LC1ALC1B≤PAPB*1.2for the portion Z1, b)0.8*PAPB≤LC2ALC2B≤PAPB*1.2for the portion Z2, and c)0.8*PAPB≤LC3ALC3B≤PAPB*1.2for the portion Z3. Moreover, the surface void ratio TES is at least equal to 0.35 and at most equal to 0.60.
TIRE HAVING A TREAD OPTIMIZED IN TERMS OF GRIP ON DRY GROUND
2023-06-22
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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