More than 430,000 tires manufactured by Cooper Tire recalled for potential sidewall separation Published: March 4, 2021 6:16 AM EST Updated: March 5, 2021 9:42 AM EST Cooper Tire & Rubber Co. (Cooper Tire) is recalling certain Discoverer, Evolution, Courser, Deegan, Adventurer, Hercules, Back Country, Multi-Mile Wild Country and Big O brand tires. The tires may develop a bulge or separation in the sidewall.The company says 430,298 tires are potentially affected. It impacts tire sizes 275/65R18 and 275/55R20. Remedy Cooper Tire will notify owners, and dealers will replace affected tires, free of charge. The recall is expected to begin March 25, 2021. Owners may contact Cooper Tire customer service at 1-800-854-6288. Cooper Tire’s number for this recall is 178.