Tire Dealer trying to sell me older tires, what do I do?

Tires are not made every day in every size, they are made in batches. Depending on sales volume they may make your tire once a year or less. Lets say they make them in January. If you order tires in February the tires you get will be a month or two old. If you order them in November the tires you get will be roughly a year old. There is nothing that the tire dealer can do to change this.