This being my first BMW, I'm wondering what "normal" tire wear looks like for regular street use. I have Kumho712's on the car for about 9 months now (I'll have to figure out how many miles that is... <20K, anyway), and it looks like the inside edges of the rears are wearing quite a bit faster than anything else. The fronts aren't quite as worn out, but there is a similar pattern. Outside edges are less worn than inside, and there is definitely wear in the middle. Tire pressures are whatever is recommended on the info panel (don't recall what I set them to at the moment).

Any thoughts?

Thanks,

Dave