Originally Posted by remmib
If the fit on a 328i they'll fit on your 320i too.
1. can use 8.5 X 18" size in front ?
18x8.5" fronts are not a problem with the proper offsets.
2. do i need put any spacer in any of the rears to adapt them?
Depending on what the rear offset is, you may not need any kind of spacers.
3. can i use RFT tires for Rims 18"?
Yes you can.
4. will have issues with my engine (2.0) or direction/suspention problems for the wide of the wheels?
These sizes should not pose any kind of problems to the vehicle since they are all within 3% of the OE sizes.