Like all other tyres, very poorly made. Ours started to lose large chunks of rubber from the tread area that was deeper than the actual tread depth. The dealer told us it's cosmetic only, don't worry. These tires are on my wife's Ford Explorer, she drives normally and pays around 10,000 a year on the car. These tires literally started falling apart at about 15km and now we have to replace them at 22km not because of tread depth but because of the amount of missing tread due to the loss of tire pieces in the tread area. I understand that some tires don't last as long as others, but not only do they wear out quickly, they pose a real safety hazard. Please use extreme caution when purchasing these tires. Conditions of use: The vehicle (2016 Ford Explorer Sport) equipped with these tires is stored in a heated and cooled garage overnight and on weekends. During the weekdays he drives about 20 miles round trip every day and parks in a covered lot.