It is certainly a pain in your neck, if you have squeak in the vehicle, and that too if it is getting worse day by day. Let us discuss four different types of squeaks in this write up.
- After your car sits, the disc brake squeak
Usually, after sitting overnight, most of the brakes will squeak which is mostly because of dew, rain or condensation which may collect on rotor surface.
As moisture will collect on brake rotors, a thin rust layer will form on the surface of the rotor. When rotor will turn then the pads will try to scrape off the rust from the rotor.
In that case, all the rust coming out of the rotor will be caught by leading edge of pad of the break that can always cause squeak.
Also, rusts that gets settled on the rotor will create an impression of pad on rotor and that will also create a noise as well as brake pulsation.
- Thinning brake pads
Brake-wear indicator may also another reason for brake squeak. When brake pads are worn out and becomes thin then it offers warning to fix schreeching brakes as it is necessary to replace brake pads.
Wear indicators are fixed in any of the following ways:
- By welding them
- By using a rivet
- By using push-on clip which is attached to edge of brake-pad backing.
All these steel tabs will be so designed that it will hit the rotor much before brake pad fully wears out, and offer warning to driver about pad material getting very thin which may be about to create metal-to-metal situation.
- High metal in the brake pads
Every brake pad has got metal but any cheaper pad may have higher content of metal and little mount of pad material. More metal content will try to drag on rotor and cause brake to squeak.
Therefore, driver must be sensitive enough listen the annoying sound so that they can infer the life of pad is over. Usually, brake pad must last for 30,000 – 40,000 miles and thereafter one must be careful.
- Drum brake which need lubrication
If you ever heard squeak from rear brakes then it is a sign that shoe-to-backing-plate contact needs lubrication. Without proper lubrication, the metal begins to rust and thereafter it can always scrape against backing plate and cause rhythmic squeaking noise as the wheel rotates.
The best way to avoid this situation will be to regularly lubricate the contact points.