I posted this on bimmerforums and got zilch:
I have an '02 M3 with 19" DPE wheels on it. I don't know the exact sizes, but they're wider than stock. I need new rears ASAP. I don't like the "stretched" look of the current setup.
I'm currently running 275/30-19, but I think I have room for something bigger.
Sample specs
Hankook Ventus V12 evo K110
It looks like a 285/30 is .2" taller; a 295/30 is .4" taller.
Thoughts? I think the 285 might be doable, but the 295 is iffy. I have a similar dilemma to solve in the front, but that's not pressing right now.