If buy "crappy Tires" you mean the bubbles issues, it's the 19" wheels that are prone to the developing bubbles. The 18" that come with the xi non-sport model are fine. Seriously, I'd suggest you just read the forum to get more detail info on the car and any other issues.

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2011 BMW 535i Xdrive (3/2011 build), Space Grey/Black Dakota, premium 1&2.