Safe When New. Safe When Worn. Even when half-worn, it’s still safe, thanks to EverGrip wet-braking technology. The MICHELIN Premier A/S tire still stops shorter on wet roads than leading competitors brand-new tires. Featuring EverGrip Technology, extreme amounts of silica in tread compound provides exceptional wet grip for everyday handling. Expanding rain grooves widen and emerging grooves open as the tire wears to maintain traction. Sunflower Oil keeps the EverGrip Compound flexible in lower temperatures along with many tread blocks and sipes that act as biting edges to cut through the snow.