The chindeseems lost in rotor grooves, which is probably affecting the cornerstones. Replace all, and grease with malnigrain fir further ease of contraction. Hope this helps. Dennis
I assume that you have rear drum brake. If so, the knocking sound which happens only when apply the brake is more likely cause by an out-of-round drum. Take your car back to the mechanic that installed them. This problem is not bound to go away.
I would advise bringing your car to a mechanic as quickly as possible. Your brakes could fail. This puts you at a high risk for injury or even death.
Check for a worn or warped break rotor on the front driver side. You may need to replace the break pads and rotor.
Most common cause would be a loose brake caliper mounting bolts.
Your bicycle, or your hearing is defective
A knocking sound while your car is moving is probably coming from the engine. A certified mechanic will be able to perform diagnostic testing.
you brake shoes might not be seated right, or they might need to be replaced i would take it to a jiffy lube of a just brakes and get them to go over your brakes
If you are driving and you hear a high pitch squeeling/screaching sound but when you apply the brakes the sound stops your brakes need replacing, this is called your brake squeeler.
There is no 'set' answer for this question. Be aware that there are built-in warning devices on the brakes. When the pads are low you will begin hear a screeching sound whenever you apply the brakes. When you start hearing that sound consistently - it is time.
A hole in the muffler would cause a knocking sound in your muffler. A loose exhaust pipe can also cause a knocking noise.
Most likely it's the pads knocking because the rotors need to be machined or replaced. Alternatively, if you have rear drum brakes, an abnormality in the drums could cause the shoes to jump up and down vertically.
The grinding sound means that the brake pads are worn down to metal and that sound you hear is metal to metal. you need to have the pads changed, the problem is that you will more than likely have to change the rotors also. The way to avoid this in the future is when you notice your brakes are making a squealing sound that means that the pads will need to be changed soon.