That's just it. Some are experiencing problems with the stock camber settings and some are not.

To me, what somebody said previously makes sense.

If you're experiencing problems with the stock settings, then something else must be off. Probably worn suspension parts. I doubt BMW would design excessive tire wear for the X.

I assume any negative camber will wear the insides more but not too bad where the tire is useless after 10K miles.

I guess if most of your driving was aggressive, straight line stopping and accelarating you could induce some unwanted tire wear - but I don't think that any one realistically drives like that.

I had my mechanic take out as much as he could (I think it ended up as -1.8 or something) because I don't plan on doing much hard driving and I don't need every ounce of performance from the X.