A warped rotor causing a pulsating brake pedal is probably number one on the list.
In my neck of the woods, rust is another issue. Even with daily usage the rust builds up on the braking surface of the rotor again causing a pulsation in the brake pedal.
disc brake components
The rotor is the disc in the disc brake system.
Common causes of disc brake noises include worn brake pads, rotor damage, and debris buildup. To resolve these issues, replace worn brake pads, resurface or replace damaged rotors, and clean the brake components to remove debris. Regular maintenance and inspection can help prevent brake noises.
If you can see the brake caliper and rotor, then it has disc brakes. If all you see is a large drum then it has shoes. If you can see the front brakes thru the wheels, you can identify disc brakes. If the rear look like the front, then they are also disc brakes. However if the rear look much different, then chances are they are drum.
Common causes of disc brake squeal when braking include uneven brake pad wear, contamination on the brake pads or rotor, and improper installation of the brake components. To prevent or resolve disc brake squeal, ensure proper installation of brake components, regularly inspect and clean the brake pads and rotors, and use high-quality brake pads designed to reduce noise. Additionally, applying a thin layer of anti-squeal lubricant on the back of the brake pads can help reduce noise.
Besides the steering lock the most common are disc brake locks and/or chains.
worn thin
In case of cost..drum brake is better than disc brake.
Depends on if it's a disc brake or rim braked bike. And then there are differences between brands. Head over to www.parktool.com, www.bicycletutor.com or www.sheldonbrown.com to find out more. For disc brake bikes, see if you can identify the brand, then go visit their website. They often post maintenance instsructions there.
Converting a rim brake wheel to a disc brake system involves replacing the wheel hub with a disc brake-compatible hub, installing a disc brake rotor, and attaching a disc brake caliper to the frame or fork. This process may require specific tools and expertise, so it is recommended to consult a professional bike mechanic for assistance.
There are many purposes to using a disc brake. Disc brakes are mainly used in industrial drills because the disc brake stops the drill gently so it doesn't overheat.
The disc brake caliper is attached to the steering knuckle or spindle.