Frequently Asked Questions (FAQs)
1. Are the shims on brake pads necessary?
Brake shims are not necessary for all cars, but they are commonly used in newer vehicles to reduce noise and minimize rattles. While brake pads can function perfectly fine without shims, the addition of shims helps to keep the noise levels down.
2. Do you grease brake pad shims?
Brake lube can be used to decrease vibrations between the caliper pistons and disc brake pads. However, it is important not to apply lubrication between the pads and noise suppression shims. It is recommended to use lube sparingly on the back of a bare pad or between the caliper and pad shim.
3. Do shims reduce brake squeal?
Yes, quality brake shims can effectively prevent brake noise throughout the lifespan of the brake job. Unlike some lubricants, shims do not dry out or become displaced over time, making them a reliable solution for reducing brake squeal.
4. Do brake shims correct pad alignment?
Brake shims, especially in motorcycle brakes, can assist with alignment and reduce noise. They not only shield heat but also serve as an important aid for aligning the brake pads properly.
5. Do brakes make noise without shims?
Shims play a crucial role in absorbing vibrations from the brakes. If shims are ignored or not used, the vibrations in the brakes can result in noise. Therefore, shims are essential for minimizing brake noise.
6. Do shims need to be replaced?
Shims are reusable components as long as they appear to be in good condition and measure out properly. Since they do not experience fatigue or wear, using shims that look good and are concentric should not pose any issues. The measurement on shims is somewhat arbitrary, as the focus is on the end result.
7. Can a bad alignment cause uneven brake pad wear?
Yes, misalignment in brake pads can lead to uneven wear. It is important for brake pads to be aligned evenly so that the entire pad makes even contact with the rotor. When brake pads become misaligned, such as having a "\|" shape instead of "| |", it can cause faster and uneven wear on the pads.