John, here is a direct link. I am not a member yet and will probably join with the next coach since I don't need tires on this one.
Michelin Americas Truck Tires Dealer Locator It looks like you put in your address or city and miles etc. and the map will show you some little colored markers. A red marker apparently is for the Advantage Dealers. I don't find as many as some might think. I would call one of the ones close to you and see what they say.