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Old 05-13-2012, 02:11 PM
Supercourse Supercourse is offline
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Location: British Columbia, Canada
Join Date: Feb 2008
Posts: 3,890
Mein Auto: 2004 X3 2.5i
That's maybe a bit too small a tire&wheel assembly for the X3.

I think what you are looking at is:

Rim: 8 x 18 Front and 8,5 x 18 Rear

ET 34 (offset in mm.)
ET 37

Tires: 225/40 R18 and 255/35 R18

That is, the width is O.K., but the overall height of the tire&wheel looks to be too small (without doing the calculation).

The offset (ET) on your 17's is 46, so those wheels would be sitting out a bit more (< 0.5").
Not a clearance issue, but might affect the steering feel.

Assuming the center bore size is the same as the X3, and your lug bolts are compatible, they could bolt up successfully. But I think you are better looking for alloys from an earlier X5.

Can't see the point of having a staggered setup unless the tires are wider than original.
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