I have a 2007 SEL that has treated me well, except the insides of the rear tires start scalloping and become noticeable after 15K miles. By 30K they are junk. I've been to two tires shops and they have both told me the same thing...I'm not carrying enough weight? HUH? They also recommend rotating which I have never done with tires. Seems to me I have a different problem then how much weight I'm carrying (normally there is nothing back there, but at times I'll load it up with 400+ lbs of "toys"), and I'm reluctant to start rotating now until my issue is properly diagnosed.
I keep my tires inflated at 35psi, and the fronts will last me 40K!
Any thoughts?