Bridgestone
Firestone Complete Auto Care Biridgestone tires (4) developed "cupping", Firestone would not honor warranty
Bridgestone Insignia SE200 tires developed "cupping" at 38,000 miles. Tire tread warranty 65,000. Firestone's "Michael" was certain that my shocks had caused the irregular high and low tire delamination spots on all 4 tires at the same time. He knew nothing about my shocks and ...