Brake Noise

Verified during road test that problem is in the brake. If the problem is cause by the brakes, pay attention to the type of noise and let that lead to the source of problem.

Brake pads wear sensors are designed to make high-picthed squeal when the pads are worn.



Other causes could be the rotor rubbing against the splash shield or that something has become wedged between the rotor and another part of vehicle. Noise may also be caused by failure to install all of the hardware when replacing a caliper or brake pads.

Sometimes the driver might notice there is strange noise coming out from the wheel when brakes are apply that's cause by rusty mechanism even the rotor itself having score marks or cracks, steering wheel vibration will be perceive at the same time.

Other sources of noise include the pads themselves. Depending on the lining materials, some pads are more prone to make noise. These noise can be like a light wire brush against metal sound, grinding or high-pitched squeal depending on the pad. Particularly the racing pads that use the different lining materials compare to normal brake pads, the racing pads are prone to make noise during braking.

Speaking of pad itself, this has been annoyed my parents for few months, eventually I got inspected and replaced when I got home after my final examination.



Photo above showing the cracking lining and uneven wear, this problem can be eliminate by using sand paper to remove the imperfection surfaces or simply replace a set of new brake pads. Be sure to inspect the brake rotor or spinning mechanism if it is brake shoes, the brake caliper piston, sliding pin and hoses. Brake lining uneven wear mostly causes by the worn rotor surface or simply the low grade brake lining itself, improper installation is rare case. Imbalance wear cause by the uneven pressure for example the clogged brake line(hose) and jammed caliper piston. When brake system service is on going the correct SOP and brake fluid should be use. Noted: Do not mixed the silicon base DOT5 with other grade of fluid. DOT4 is the most common highest grade selection available for legal road vehicle.





Let’s conclude this topic by talking about off road vehicle like 4x4 or pick up. This is common for pick up truck of having this kind of problem particularly after the off road racing event. Due to the extreme road condition the suspension system may have issue after the “abused”, other than the tires, the unsprung weight mechanism, brake pads and rotor itself is badly worn out cause by the mud, sand and tiny rock will stuck between them and create huge amount of unnecessary friction, however, they will replace all the worn out component to prevent any kind of mechanical failure.