1. Corrosion: If there is too much corrosion on the rotor, it may be difficult to move. This can happen if the brake pads have not been changed in a long time or if the vehicle has been exposed to salt water.
2. Seized brake caliper: The brake caliper may be seized, which means it is not able to move freely. This can happen if the brake fluid is old or if there is a problem with the brake caliper itself.
3. Worn-out hub bearing: The hub bearing may be worn out, which can cause the rotor to bind. This can be a dangerous situation, as it can cause the brakes to fail.
If you are not able to move the rotor, it is important to take your vehicle to a mechanic to have it diagnosed. Driving with a rotor that is not moving properly can be dangerous.
Here are some additional tips for changing brake pads:
* Make sure that you use the correct brake pads for your vehicle.
* Follow the instructions provided by the brake pad manufacturer.
* If you are not comfortable changing brake pads, take your vehicle to a mechanic to have them done.
