Continental PureContact Radial Tire - 215/50R17 95V Featuring a silica-enhanced, all-season tread compound, the PureContact with EcoPlus Technology incorporates Continental's Tg-F Polymers and +Silane additives to improve treadwear, fuel efficiency and traction on slippery roads. The compound is molded into a computer-optimized asymmetric tread design that reduces pattern noise while chamfered tread block edges enhance dry-road handling. Independent tread blocks are siped to provide additional biting edges while Continentals Traction Grooves (vertical ridges in the circumferential grooves) promote three-dimensional snow-to-snow traction. PureContact with EcoPlus Technologys tread pattern features Tuned Performance Indicators  visible letters molded into the outboard shoulder to alert drivers of the tire's potential performance in various weather conditions. A visible "DWS" indicates the tire has sufficient tread depth for dry conditions, as well as wet roads and light snow. After the "S" has worn away, the remaining "DW" indicates the tire only has sufficient tread depth for dry and most wet road conditions. And after the "W" and "S" have both worn away, the remaining "D" indicates the tire has appropriate tread depth for dry conditions only.