LT285/75R17 Cooper Discoverer Stronghold AT 128SMeet the LT285 75R17 Cooper Discoverer Stronghold AT 128S, a tire crafted to elevate everyday driving. Built by Cooper, the DISCOVERER STRONGHOLD AT emphasizes balance: grip when you need it and comfort when you want it. Blackwall sidewall construction helps the tire resist routine wear while keeping the aesthetic understated and refined. Channels and sipes are arranged to promote consistent traction while reducing pattern noise inside the cabin.