The Discoverer S/T MAXX features CooperÆs proven and reliable 3-ply ôArmor-Tek3«ö carcass construction combined with a new proprietary cut and chip resistant tread compound. The S/T MAXX has a modern hybrid 4-5 rib tread design and unique tread features. The S/T MAXX is destined to be a commercial grade traction tire that will perform in the toughest terrains while retaining remarkable on-road traction and low noise characteristics.'