A few thoughts about tune up
The brake pads wear out over time and need to be replaced regularly. When the pads are worn out, how can you tell? You will know that your brake pads need replacing because as they wear down, they will start squeaking when you go to brake. At that point, you will need to go to an auto repair shop and get your brakes checked. Never put off getting your brakes checked! The brake shoes will start scratching the rotors if the pads are too worn down. Instead of only replacing the pads, a very reasonable and inexpensive fix, the cost of getting your brakes in good condition again will go up because now new rotors are needed.