Michelin Primacy XC LT235/80R18 121/118R E OVERVIEW Made for light trucks and SUVs, the Michelin Primacy XC is an all-season tire that offers strong on- and off-road traction. The Primacy XC's tread design gives an all-new styling to 4X4 trucks or SUVs, and Comfort Control Technology. Additionally, the new-generation tread compound used in the Primacy XC reduces rolling resistance for improved fuel economy.