Rear end issues..
So i've had a recurring problem with my inner sidewall wearing down and causing the tires to blow. From the looks of it the sidewall is rubbing the inner fender causing wear. There is a section on the sidewall that was sticking out a little more then the rest and had been rubbed clean of the protective coating that BMW put on from the factory showing bare metal. I beat that in today after losing another tire. My question is what is causing this. I crawled up in under the car tonight with a new tire mounted and examined the location of the tire in comparison to the inner fender well and the tire has a good inch and a half clearance to the fender well as well as being about an inch and half higher then the place that appears to be rubbing. So in order for this to be the cause the wheel would have to be shifting down and in at the same time in order to cause this rubbing. This is very puzzling because I cant understand how this would be possible. I also looked at the rear differential mount and from what i can tell appears to be cracked and may be bad allowing for the differential and axles to shift when going around a corner. However I would think that the independent suspension being mounted to the frame/body would prevent such an aggressive movement.
My question essentially is would the bushings for the differential or possible subframe failure cause this to happen. I had the subframe inspected about two years ago and they said it checked out but am unfamiliar with what parts are prone to break and cause this failure and where they are located. If anyone has any thoughts to this I would really appreciate it cause I am simply dumbfounded at the moment.
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Originally Posted by BimmerWill
