{
  "owners": null,
  "title": "Cooper Tire recall 21T002: Big O At/T Big Foot, Big O Bigfoot A/S, Cooper Discoverer A/T3 and 11 more",
  "url": "https://carsmultiverse.com/recall/21t002/",
  "summary": "Recall 21T002 (Cooper Tire): A sidewall separation may cause the tire to rapidly deflate, increasing the risk of a crash. Cooper Tire's own number: 178.",
  "excerpt": "Big O At/T Big Foot, Big O Bigfoot A/S, Cooper Discoverer A/T3, Cooper Discoverer At3 4s, Cooper Discoverer Rtx, Cooper Evolution H/T, model year 9999. Filed by Cooper Tire & Rubber Co. and reported to NHTSA on 19 February 2021. 430,298 vehicles potentially affected. What the notice says 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. Is your vehicle included? Check with your VIN at NHTSA , or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on. CarsMultiverse / Recalls Cooper Tire's own number for this recall: 178. That is the number on the owner letter and on the dealer paperwork. 21T002 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways. Answered from the register this site holds. NHTSA is the record to act on. What the authority says can happen if this is not fixed: “A sidewall separation may cause the tire to rapidly deflate, increasing the risk of a crash.” 21T002 Cooper Tire & Rubber Co. Tires 19 February 2021 9999-9999 BIG O AT/T BIG FOOT, BIG O BIGFOOT A/S, COOPER DISCOVERER A/T3, COOPER DISCOVERER AT3 4S, COOPER DISCOVERER RTX, COOPER EVOLUTION H/T, DISCOUNT TIRE ",
  "register": {
    "authority": "NHTSA",
    "country": "United States",
    "index": "https://carsmultiverse.com/changed/"
  },
  "datePublished": "2026-08-23T21:33:44+00:00",
  "dateModified": "2026-09-16T18:51:19+00:00",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "citation": "CarsMultiverse, \"Cooper Tire recall 21T002: Big O At/T Big Foot, Big O Bigfoot A/S, Cooper Discoverer A/T3 and 11 more\", https://carsmultiverse.com/recall/21t002/, licensed CC BY 4.0.",
  "note": "CarsMultiverse is an independent record, not a safety authority. To act on a recall, use the official register."
}