275 40 255 40 tires

Been trying to find someone who is running these specs tires on there m3 on 18s. Ideal ad09 tires as well

Why?

Some useful stuff in here, Spazzy has been really helpful sharing his experience.

https://www.m3post.com/forums/showthread.php?p=32208403

This is my plan in the spring too, Houston roads are ridiculous.

Brad_e9t2 wrote

Been trying to find someone who is running these specs tires on there m3 on 18s. Ideal ad09 tires as well

Yes, we run Continental DWS06+ in that size without issue on our 382k mile E92 M3 on 18x9.5/18x10.5 wheels on newer stock EDC suspension. We had PS4S in OEM sizes on these wheels before, but they seemed to be too stretched and rode harshly. The comfort improved substantially after the swap which was appreciated while driving from SF to NYC.

On the track, you might get rubbing depending on ride height and camber settings. Our experience is street use only.

I am running the setup that you are asking about