I have minimal wear on the tread and am disappointed in the noise factor. The sport tires do grip nicely but I prefer a less ' Teutonic ' ride. I have a set of Continentals on my 740 series BMW and am satisfied with the ride. I have noticed the quality of the Michelins has changed a bit in spite of the price paid.
I am sorry that I did not ask the membership about tires prior to the installation of the Michilens although Costco offers a good deal on them but is limited in their offerings. I jumped the gun in the excitement of newer car ownership on this one.
Thanks for your help.