Michelin X-Ice Xi3 Winter Radial Tire - 235/50R18/XL 101H This 3rd generation X-Ice winter tire provides the necessary traction to safely overcome extreme winter conditions featuring Cross Z Sipes , Micro-Pumps, and FleX-Ice compound. The MICHELIN X-Ice Xi3 tire provides winter performance with MICHELIN MaxTouch Construction which features a unique contact patch shape - maximizing even and longer tread life. The MICHELIN X-Ice Xi3 is also designed to be environmentally friendly to help reduce fuel consumption in addition to having excellent winter grip and long lasting tread life.