I run 9J Avantgarde 359 reps on the front of my ///M. PSS 235/35 19s fitted and no issues.
Offset I think was et35, and I am running H&R springs.
Rears are 10J ET38. PSS 265/30 19s with spacers.
Car looks well on them & good info for the OP to digest , there is a possibility the stiffer springs are helping as even though lowered there should be less travel in the bumps & twisties