Stance on 25mm & 30mm Spacer :)

cheshirecat

Once you drop the car, you get camber in the front and rear. While the rear is adjustable, most people leave the front unless they're running coils with an aggressive drop.

The camber tucks in the top of the tire more.

While 15/20 would be perfect with stock height, 20/25 with a mild drop and 25/30 with a moderate drop is required to keep the top of the tires flush with the fender.

(given that you aren't running front camber correction, and/or are running with more negative camber in the rear post-drop)