Kumho Ecsta STX KL12 All-Season Tire - 255/55R18 109V All-season performance for SUVs and light trucks Two wide circumferential and lateral grooves evacuate water to minimize the risk of hydroplaning Variable pitch tread blocks assist with road harmonics to produce a quiet ride reducing vehicle cabin noise Jointless construction and bead reinforcement ensure durability with a large contact patch and steering response Rim protector in lower sidewall safeguards wheels against curb damage