The Ultra Grip Winter is Goodyear's Studdable Winter / Snow tire developed for the drivers of coupes, sedans, minivans and crossovers, as well as sport utility vehicles and passenger-oriented light-duty pickup trucks. Designed to offer high levels of traction in cold wintertime temperatures, Ultra Grip Winter radials are molded to accommodate the use of optional metal studs to increase traction on hard-packed snow and ice.Ultra Grip Winter radials feature a winter compound molded into a directional tread design that enhances cold weather flexibility and helps evacuate water on wet and slush-covered roads. Strong shoulder blocks promote dry road stability and even treadwear. Wide tread grooves help evacuate loose snow and slush to enhance wintertime traction while multiple sipes increase the number of biting edges to improve grip on ice and snow. Alternating rows of optional metal studs can be added in the shoulder and intermediate tread blocks to increase traction on hard-packed snow and icy roads.Goodyear Ultra Grip Winter tires meet the industry's severe snow service requirements and are branded with the three-peak mountain snowflake (3PMSF) symbol.Install Ultra Grip Winter tires in sets of four only.Molded to accept optional TSMI #12 silver-colored metallic winter studs. Related Information: What is the three-peak mountain snowflake symbol (3PMSF)?