The ornamental design for tread for pneumatic tires, as shown and described.
FIG. 1 is a perspective view of the tread for pneumatic tires incorporating my new design, it being understood that the tread pattern repeats circumferentially throughout the outer circumference.
FIG. 2 is an elevational view of one end of the tread for pneumatic tires shown in FIG. 1.
FIG. 3 is a fragmentary view of FIG. 2.
FIG. 4 is an elevational view of one side of the tread for pneumatic tires shown in FIG. 1, it being understood that the opposite side is of identical appearance.
FIG. 5 is a view similar to FIG. 3, with a section line 6-6 drawn therein; and,
FIG. 6 is a cross sectional view taken along the section line 6-6 of FIG. 5.
In the drawings, the broken lines defining the sidewall, and inner bead depict environmental subject matter that forms no part of the claimed design.