AN INSUFFICIENT CURE CONDITION IN THE BEAD WIRE RUBBER INSULATION WAS CAUSED BY A SMALL AMOUNT OF CONTAMINATED RUBBER.
THE DEFECT INVOLVED RESULTED FROM A BROKEN DRILL BIT PROTRUDING 0.15 INCH IN THE MOLD WHICH PENETRATED THE CURED TIRES TO THE PLY CORD IN THE SIDEWALL AREA. TIRES WILL NOT LEAK AIR BUT MOISTURE AND DIRT MAY ENTER THE HOLE AND CAUSE FAILURE.