Brakes last quite a while and in term they can often be forgotten despite being one of the most important safety features on the vehicle. If left unchecked the brakes could cause more harm to both your safety and your wallet. As the rotor is one of the more expensive parts of the braking system it should be taken care of. Maintaining brakes requires routine checks to include miles, audio noise, stopping conditions, odors, and indicating dash lights. If unsure always consult a certified mechanic.