I bought a set of tires in April. In July, I caught side damage to one tire. Sent all data to Nokian. Recognized that the case falls under the extended warranty. Ped the tire in July. But still haven't received a replacement! They say that I will probably get a replacement sometime in January next year ! Therefore, comrades, when buying, you should not consider an extended warranty as a reason for buying. And the tires themselves are pretty good.