Never buy tires from Costco. They are more interested in selling you new tires when you come in for warranty service than fulfilling their promises. I came back to get a repair for a nail in one of their tires but they wouldn't do it because the tire already had 2 repairs and it was older than 5 years. But I was welcome to buy a new tire. I went to Les Schwab and they were glad to repair it for free. This is the second time I've had Costco Tire Center fake a "liability" issue. It's no wonder that Costco has so many "very dissatisfied" reviews.