Wheel offset for e90

[egtlover74]

I have e90 w/ sport pkg
I am trying to get either 18 inch or 19 inch wheels

They are
18x8.5 5x120 with 20 or 38 offsets
18x9.5 5x120 with 24 or 45 offsets

19x8.5 5x120 with 20 or 38 offsets
19x9.5 5x120 with 24 or 45 offsets

will any of them fit?
are they too wide or stick out too much?
can I use 45 offsets with some spacer?
If they fit, what tires should I use?
Please help me

here is the link for the wheels

http://www.machiii.net/wheels/MRR/GT-1.htm

I prefer 18's due to road conditions here in wahsington D.C.

[NZO Wheels]

You will need the higher offsets and then use some hubcentric spacers. We tried to use a 18x8.5 et20 setup from a 5 series and it stuck out too far in the front. The 45 offset went too far in. Ideally you want around 35mm up front and in the rear. The picture I am attaching is e90 with 18x8.5 front et33 and 18x10 rear et25. It had 235/40-18 front and 275/35-18 rear. The 9.5 will work with the 25mm offset but a 35 would still be better.
You can find quality hubcentric spacers in the 12mm size from a couple of vendors. 10mm might be harder to find due to the length of the factory hub necessatating(spelling) the thicker spacer. Rubbing is no issue.

Mike