tire offset question

[KingKongMMM]

I need some help here guys. I have a set of 18" Millie Miglga rims with tires (225/40/18)from my 95 M3 and I tried to put them on my 02 325I. after the installation, it looks good, but the first thing I notice was that the steering wheel was pulling to the left and the right a lot more than normal. I thought the wheels are making the 325I more sensitive to the road. But then the Engine warning light came on, so I had to take tem off. The warning light was gone right away.
I called up tirerack, they told me that the offset was different. M3 is 40 offset, and 325i is 47. But it should still work. I know many ppl put M wheels on other 3 series.
Can anyone help me with this? I already bought a set of wheels on my M3, and was planning on switching the Millie Miglia on the 325I, but now it looks like I am gonna have to get rid of them
Thanks,
Kingkongmmm

[The HACK]

The steering sensitivity is called TRAMLINING. Happens with ALL larger diameter wheels. Live with it.

The tire rack guys are right. It should still work with a 7 mm difference in offset. I think the check engine light is a completely un-related problem...Why would a wheel problem show up as check engine light? Are you sure it's not the DSC/ABS warning, which would make so much more sense?