The Michelin Pilot Alpin PA4 is a winter tire that allows you to ride safely in winter every year , giving you more control on snow and ice . With the exclusive design of the sculpture and StabiliGrip technology, 3-D technology for the slats , the Pilot Alpin PA4 provides accelerated 10% higher in the snow and an improvement of more than 5% of the holding drive and braking. Michelin Pilot Alpin PA4.