It seems like the ebay seller is in the wheel business. If he is not advertising them as a right fit for X, they probably don't fit, and that would be good enough reason for me not to buy them.

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Currently driving: 2011 E70 x35i , 2011 E90 335d
Previous BMWs: 2007 E90 328i , 2005 E53 3.0i, 2011 F10 535i (6spd manual)