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A quick perusal via the handy Search Tab turns up pages of threads on wheel bore size diff between E53 & E70, eg:
X3 E83 = PCD 5x120, center bore 72.5mm and M14x1.5 bolt thread. ET 40-45
X5 E53 = PCD 5x120, center bore 72.5mm and M14x1.5 bolt thread. ET 40-45
X5 E70 = PCD 5x120, center bore 74.0mm and M14x1.25 bolt thread. ET 37-53
X6 E71 = PCD 5x120, center bore FRONT 74.0mm, center bore REAR 72.5mm and M14x1.5 bolt thread.
Your E53 wheels, whether oe or rep, will not fit on E70, though a few posters report good luck with having the E53 wheels bored by any decent machine shop, fwiw.
GL, mD
Maybe this wheel info should be a sticky?! ;>)
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