The Hybrid HD3 is Continental's On-/Off-Road Commercial Traction tire developed for single and dual application use on the drive axles of medium-duty vehicles. The Continental Hybrid HD3 is designed to provide long wear life in on/off highway service and low rolling resistance, along with traction in dry, wet and wintry conditions, including snow.The Continental Hybrid HD3 features a cap/base tread utilizing a wear-resistant cap compound on top of a low damping base compound to reduce rolling resistance. The two-layer tread is molded into a symmetric design featuring independent shoulder and intermediate blocks to provide year-round traction. Wide circumferential grooves resist hydroplaning while lateral grooves and sipes provide the biting edges to enhance traction on slippery surfaces. Hybrid HD3 tires achieve traction levels sufficient for the severe snow service rating and are branded with the three-peak mountain snowflake (3PMSF) symbolThe tire's internal structure includes steel belts on top of a heavy-duty steel casing to enhance puncture resistance and highway stability. Related Information: What is the three-peak mountain snowflake symbol (3PMSF)?