[1996 328ti]

Size matters in heat dissipation. Once you are into your ABS or at the point of threshold braking, big brakes don't make you stop faster. Tires are probably the biggest factor in braking.

I have yet to have any braking issues with E36 vented front rotors. The only time I had brake fade was waiting too long to replace my fluid. And if it is just a matter of looks for the street, do whatever you want but realize, big brakes do not make you stop faster.