The E46 & E9X chassis are aging: subframes crack, bushings get torn apart, diff bolts break - sh*t happens. We can close the gap and modernize our chassis.
This was 2006. Back then, the outgoing Porsche 996 911s were running 285 at the rear and we thought that was wide.
Short answer: yes.
Long answer: it is the best driving experience modification on the M3 E9X.
I will stand by that - here's why.