depends on what u drove and how good thestock brakes are. usually big brake kit wont help casuse most people just dont brake hard enough to have a need for big brake kit. most stock system these days are ver well engineered all u need would be good pads and rotors. Unless u feel your brake fade dont worry about it. Most stock system these days are ver well engineered all u need would be good pads and rotors. most people do big brake upgrade is for looks than anything else