AVERAGE VOID DEPTH TRUCK TIRE WITH ANGLED RIBS HAVING DECOUPLED SHOULDER BLOCKS

A heavy truck tire tread with a rib (18) located between first (14) and second (16) tread grooves. A shoulder block (30) is adjacent the rib and at a shoulder edge of the tread, and a decouple groove (32) is present that decouples the shoulder block from the rib. The decouple groove is spaced from and free from engagement with the shoulder edge, and extends at least twice as long in the longitudinal direction than in the lateral direction. The width of the decouple groove is less than widths of the first and second tread grooves. The tread has an average void depth that does not go past a twenty percent line, wherein the twenty percent line is twenty percent of a full void depth located from an outer surface of the tread, and wherein the average void depth does not include decouple grooves and tread outboard from the decouple grooves. 一种重型卡车轮胎胎面，其花纹条(18)位于第一(14)和第二(16)胎面花纹沟之间。胎肩花纹块(30)邻近花纹条并且在胎面的胎肩边缘处，并且存在分离花纹沟(32)，其使胎肩花纹块与花纹条分离。分离花纹沟与胎肩边缘间隔开并且不与其接合，并且在纵向方向上比在横向方向上延伸至少长两倍。分离花纹沟的宽度小于第一和第二胎面花纹沟的宽度。胎面具有不超过百分之二十线