I had Michelins years ago and was not satisfied with them. Costco kept on selling them and I was told that the ones that they were selling later were made to Costco specs.
I put on a set of Costco Michelins rated for 80,000 miles. I had 76,000 on them when I replaced them at Costco for a new set; they would have made 80K easy, but didn't want to push my luck driving the freeways around here. Now I only drive that vehicle about 4,000 miles in a year so this set should last a long time.