315/30R21 Pirelli Winter Sottozero 3 105VFrom morning commutes to long weekends, the 315 30R21 Pirelli Winter Sottozero 3 105V is built to make every mile count. Built by Pirelli, the WINTER SOTTOZERO 3 emphasizes balance: grip when you need it and comfort when you want it. With a Blackwall sidewall, the tire maintains a sleek profile and dependable toughness. The tread pattern is tuned to maintain traction on dry pavement, manage water in the wet, and stay composed in light snow. Perfect