The Premier A/S is Michelin's Grand Touring All-Season tire developed for the drivers of coupes, sedans and minivans looking for tires that deliver category-leading wet grip when new and when worn. And even when worn, Premier A/S tires are designed to stop shorter on wet roads than leading competitors' brand-new tires, as well as provide all-season traction on wintry roads, even in light snow. The Premier A/S is a Michelin Total Performance tire that utilizes innovative technologies to bring multiple performances together. Combining stopping power, driving control, promised weather appropriateness and enhanced fuel efficiency, Michelin Total Performance tires reduce the influence of traditional trade-offs normally associated with tires. Michelin Total Performance is a promise of Michelin tire excellence. Premier A/S tires use an extreme silica and sunflower oil enhanced tread compound to increase traction in wet and cold temperatures. This compound is molded into a symmetric tread design featuring a continuous center rib flanked by notched intermediate ribs and linked shoulder blocks to deliver straight-line tracking and responsive dry-road handling. Michelin EverGrip Technology adds Expanding Rain Grooves around the tire's circumference and Emerging Grooves across the shoulders. As the tire wears, the Expanding Rain Grooves widen while Emerging Grooves open up across each shoulder block to help retain more traction in wet and wintry conditions.The tire's internal structure includes twin steel belts reinforced with spirally wrapped polyamide cord on top of a polyester casing ply to blend handling and durability with ride uniformity and comfort. *Specific sizes utilizing Michelin Total Performance eco-focused manufacturing methods are identified as such on the Sizes tab, as well as on the tire's Specs tab. Related Information: Environmentally Conscious Manufacturing