US 12,285,976 B2
Tire comprising a dual-layer tread
Christian Jean-Marie Kaes, Schrondweiler (LU); Steve Ludwig, Butzbach (DE); Anna Katharina Bier, Hanau (DE); Gary Terence Barrett, West Midlands (GB); Bjoern Springer, Bruchköbel (DE); Richard Cox, Birmingham (GB); and Kimia Ekramzadeh, Hanau (DE)
Assigned to THE GOODYEAR TIRE & RUBBER COMPANY, Akron, OH (US)
Filed by The Goodyear Tire & Rubber Company, Akron, OH (US)
Filed on Jul. 31, 2023, as Appl. No. 18/362,497.
Prior Publication US 2025/0042202 A1, Feb. 6, 2025
Int. Cl. B60C 11/00 (2006.01)
CPC B60C 11/005 (2013.01) [B60C 11/0008 (2013.01); B60C 2011/0025 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A pneumatic tire comprising a tread with a ground engaging surface, the tread being a dual-layer tread made of
a first layer comprising a first tread compound having a loss compliance LC(1);
a second layer comprising a second tread compound having a loss compliance LC(2);
wherein both of the loss compliance LC(1) and LC(2) are determined by a dynamic mechanical analysis system at a frequency of 10 Hz, under pre-strain of 10% and dynamic strain of 2.5% within a temperature sweep from 0 to 130° C.;
wherein, when the tread temperature is in the range of from 5 to 50° C., LC(1) >LC(2);
wherein the volume ratio of the second tread compound relative to the first tread compound in the tread is in the range of from 0.5:1 to 10:1.