Originally Posted by busman76
Thanks for the info. How does wheel spacer affect this whole situation. If I lower the vehicle with h&r and add wheels spacer 12 in front and 10 rear? Can I expect rubbing issues? I am just running the stock 18" wheels and tires for now. Sorry just a noob with a few questions here.
No problem busman76, we're all here to help in anyway that we can.
Wheel spacers, as I'm sure you already know, brings the wheel out more resulting in more negative offset. A 12mm / 10mm spacer will be just fine for the E9X M3 as Tom said also.
This is just for your information, nothing to do with the set-up that you're thinking about running. Wheels with TOO extreme of a negative offset can cause increased steering wheel kick-back and put more stress on the vehicles entire suspension.