Vehicle description: passenger vehicle tires. System: tires, hilife M501, sizes, 135sr13, 145sr13, 155sr12, 155sr13, 165/70sr13, 165sr13, 165sr15, 175sr14, 185sr14, and higrip M529, size 175sr14.description of defect; noncompliance to fmvss 109. The adhesion compound in the steel belts under certain conditions could lead to possible separation in the area of the belt plies.