There is no easy answer to this one. Front – Rear braking has many different configurations. You have rear discs and rear drums. Sometimes your front and rear brakes are evenly matched and many times they are not. You may see 12” rotors, front and rear or 12” front and 9” or 10” rear. Many times you have metallic front pads with organic rears. Hydraulic pressures also affect the mix. Fronts run 800 to 1000 psi and rears 400 psi or less.