I learned the hard way about tire rotation when I was younger. I used to rot & bal at 10K miles. A new Chevy I bought said ever 9000 but that was in the late 80's and early 90's. Another car, I think the 94 Prizm said 7500 miles.

A good friend of mine that owns a front end alignment shop in Garland said, to try 5000 and the tires will last much longer. I also found this eliminates the cupping or the tires making strange sounds at highway speeds. I have done that set after set and car after car. The michelin's have went up to 75K and another set went to 70K. I could have gotten another 5K but the wife wanted a new set as we were going on a long trip. Anything for her to be comfortable in the car.