If I put bigger brakes on front & bigger meats on the wheels, the rear is going to be lighter under hard braking. If I don't compensate (reduce) brake performance at the rear, I'm looking at possible rear lock-up on a non-ABS car. Therefore, I don't worry about the rears except to be certain I avoid rear lockup.
If you've got ABS, does it really matter?? You brake as hard as you need to & the wheels won't lock up, so you can pretty much bias things whatever way - within reason. The ABS system is pre-programmed for specific criteria... True??
