I just ordered a Michelin Primacy Alpin ZP I have one on the 6 and the center of it is fairly bald. I think it wears in the center bc I run 38 psi. Not sure of mileage bc it started on my full Wing and got moved to the F6. Wish I had kept better track but it is in the 30k range. Ordered from Tire Rack $165 to my door. Sam's wanted $180 and I had to pick up at the store. It is not easy to find them in stock in Florida even Sam's said 5 days. I will post a pic of the tire when I take it off. I think I will throw the OEM back on. It is sitting in the garage mounted on the original rim.