I got a response from back from Michelin. It's kind of long and rambling and doesn't directly address the question that I asked, other than to say that all Michelins "are built to the standards that have made our products the benchmark for the industry" and that they hope that the issue has been resolved to my satisfaction.
I still wish all 4 tires had the same date code and/or (at the very least) came from the same country, but it is what it is. I think I'm just going to roll with it and see what happens over the next 80,000 or so miles that they're supposed to last. At this point I don't think I'm going to go back to bug the people at the tire store.
Here is a copy and paste of the email from them that I received....
Thanks for contacting the Michelin Consumer Care Team. My name is Carley and I look forward to helping you out. You've been assigned case number 02595342. This will allow my team to quickly pull up your case details if any further questions arise.
Michelin’s strategy is to manufacture tires in the country where they will be sold whenever possible. The vast majority of Michelin products sold in North America, are built in the 19 plants we have across the United States, Canada and Mexico, employing most of the 23,000 employees of Michelin North America. However, Michelin is an international company, with manufacturing operations at 72 plants across 19 countries around the world. To meet the needs of our customers by providing more specialized tire lines in smaller quantities, we import some tire lines into North America and we export others from North America. Please be assured that no matter where your Michelin tires are manufactured, they are built to the standards that have made our products the benchmark for the industry.
We hope that this issue has been resolved or addressed to your satisfaction. If we can assist you further, please respond to this email or call us at 866-866-6605 (toll-free) between 8:00 a.m. and 7:00 p.m. EST Monday through Friday, or 9:00 a.m. and 1:00 p.m. on Saturday.
We appreciate your business and thank you for choosing Michelin.
Sincerely,
Carley
Consumer Care Department
Certified Michelin Product Expert
