Cooper Discoverer Stronghold AT – LT285/75-18E 129S

The Cooper DISCOVERER STRONGHOLD A/T is an All-Terrain Passenger Light Truck tire designed with a strong shoulder featuring scooped tread edges, wide tread grooves, and sidewall hook patterns. This tire also includes Cooper’s 3D sipe technology and textured shoulder edges that enhance durability and traction. It is rated M and S, carrying the Three-Peak Mountain Snowflake (3PMSF) symbol, which ensures reliable winter performance. Available in the popular 285/75-18 size, this tire supports a maximum load of 4079 lbs with a speed rating of S and a robust Load Range E.

Vehicle fitment includes models such as the 2026-2027 GMC Sierra EV AT4 and various Ford Super Duty trucks from 2018 to 2026, among others. The tire comes with a 60,000 mile warranty for added confidence. When you’re ready to upgrade, schedule an appointment to get your Cooper DISCOVERER STRONGHOLD A/T tires installed conveniently. Learn more about the brand at Cooper.

TIRE SPECS
Tire Size: LT285/75-18E
SKU: 170289048
Width: 285
Ratio: 75
Rim: 18
Load Index: 129
Load Range: E
Speed Index: S
Speed Rating: 112 MPH
Warranty: 60,000 Miles
Max PSI: 80
Run Flat: No
Snow Rated: Yes
Tire Type: all-terrain