Wheel size, Offset , Tire size HELP!

So im planning this out first, I am 100% on getting a e46 m3 soon. Tein coilovers and already chosen ssr sp1s as the wheels. now im going to get the fenders rolled and needed some help on the offset and not so crazy tire stretch. Going for an aggressive/flush look, but i have no idea what im doing at this point. some help would be nice pics would help too thanks again!

ok, youre getting fenders rolled on a car that you havent got yet?

I am 100% on getting a e46 m3 soon

anyway for an M3, to have a good stance and you want about 8.5" up front and around 10" out back as far as width... then you want the front offset about 30, maybe high 20s, and the rear about ET20 maybe more, im not 100% on M3s yet. stretch will be dictated by the width rims you get.

visit stanceworks.com to see how the extreme guys do it, its kinda hated on over here when extreme. but its catching on.

Correct i dont have the car yet, better yet i dont have a car, crashed my 05 zhp. Due to a toatal loss, i am able to get an M. Thanks for the help!