Yokohama Rubber Co. Ltd. (TYO:5101) recently announced that it is planning a full-scale Japanese market launch for a new all-season tire, the BluEarth-4S AW21. Designed with the concept of excellent snow performance and year-round usability, the tire takes techniques developed from Yokohama Rubber’s IceGuard studless winter tires and combines them with the summertime technology behind the BluEarth line. The company…