When it comes to car maintenance, diagnosing and servicing the brakes is one of the most important tasks. One of the components that makes up the braking system is the rotor, which is responsible for providing the necessary friction to slow down and stop the car. A bad rotor can cause a variety of issues, including a loud, squealing sound when the brakes are applied.
What is a Rotor?
A rotor is a round disc made of metal and attached to the wheel hub. Its job is to provide friction when the brakes are applied and acts as a vehicle’s primary braking system. The rotor is connected to the brake pads, which are then connected to the caliper. When the brakes are applied, the caliper squeezes the pads against the rotor to create friction that can stop the car.
What Causes a Bad Rotor?
There are several common causes of a bad rotor. The most common is age, as rotors are designed to wear out over time. Using the brakes too often, too hard, or for an extended period of time can also cause wear to the rotor. Other causes include damage from a collision or rusting due to road salt.
Signs of a Bad Rotor
If your rotors are bad, you will likely experience a few warning signs. One of the most common is a loud, squealing sound when the brakes are applied. This sound is caused by metal against metal contact and is an indication that the rotor is either warped or excessively worn. Other signs include vibration when braking, a decrease in braking power, or a feeling of pulsing when the brakes are applied.
How to Diagnose a Bad Rotor
If you suspect that your rotors are bad, there are a few ways to diagnose the issue. First, visually inspect the rotor for any signs of damage, rust, or warping. You can also use a micrometer to measure the thickness of the rotor to determine if it is excessively worn. Finally, you can test the surface of the rotor for any signs of unevenness or excessive wear.
How to Fix a Bad Rotor
If you’ve determined that your rotors are bad, the next step is to replace them. Rotors are relatively easy to replace, and most can be done with basic tools. First, remove the wheel and caliper so that the rotor is exposed. Then, use a lug wrench to remove the rotor from the wheel hub and replace it with a new one. Finally, reattach the caliper and wheel and you’re ready to go.
How to Prevent a Bad Rotor
The best way to prevent a bad rotor is to practice good brake maintenance. This means having your brakes checked and serviced regularly, as well as being mindful of how you use them. Avoid excessive braking, such as when driving downhill, and be sure to give yourself plenty of time and space to stop when necessary.