[11' AW M3]

I am revisiting this thread to get some insight from the aggressive fitment guru's again. I am now moving onto another new wheel set, and I would like some insight because I am spec'ing in the build from scratch. For dimensions, I am going to go with 20*9 front and 20*10.5 rear. I don't see a need to go with an 11" rear as that extra 1/2" barrel shouldn't affect the look of the wheel in any way, just add 1/2" to the inner barrel. I think the tire sizes I would like to run are 255/30/20 and 305/25/20. Right now, I have a 255/295 michelin ps2 combo and I really like the feel. I want to step up to the 305 in the rear to get that little tiny bit increase in sidewall height.

With that said, what do you guys feel the ideal offsets are? I don't want to run into any problems with rubbing. I am at stock zcp height right now, but I will probably be lowering slightly soon. I was thinking something in the neighborhood of 9" +18, and 10.5" +21... What do you guys think?