Hi! I have an 04 Mo with approx. 12,500 miles on it currently. I have already noticed some wear in the tires (which is expected), but I am just concerned about the longevity of the factory rubbers. How many miles can I expect to get from the stock tires given regular rotations? Its just that I drive a lot and am concerned that im going to be shelling out hundreds, regularly, for new tires! Thanks all!