In Reply to: e30 m3 wheels help needed(offset,Bolt P) HELP!!!! posted by mteckboy on March 24, 2002 at 11:01:08:
Bolt pattern is 5x120. Offset depends on wheel width and tire choice.
Factory 7" = ET30
Factory 7.5" = ET27 (Sport Evo)
Aftermarket 8" = ET18 - ET24 (Depends on the wheel style and depth too)
Aftermarket 8.5" = ET13-17 ??? Not sure about this one.
I have 18x8 w/ET23. I have also had 18x8 w/ET20. Both sets worked really well.