If I need to replace the front brake pads do I necessarily need to replace the rear brake pads as well?
As a car slows, its weight is shifted toward the front causing the front brakes to be given a greater portion of the stopping job than the rear brakes.
Most vehicles are designed with slightly larger — therefore more energy absorbing — front brakes.
Front brakes tend to do more of the stopping than do the rear brakes, so they often wear out faster.
Rear brakes should be checked when the fronts are replaced. However, they often do not need to be replaced as frequently as the front brakes.