How do you measure brake disc pad thickness?

How to check brake pads: Measure the brake pad thickness by placing the compass points between the backing plate and the rotor. Measure the brake pad thickness at both the top and the bottom of the pad.

At what measurement should brake pads be replaced?

Brake pads should typically be replaced when approximately 1/8″ to 3/16″ of friction material remains on the steel backing plate. Brake rotors should be replaced before their thickness has reached the prescribed “Worn Rotor Minimum Thickness” limit (expressed in millimeters) engraved on the edge of the brake disc.

Should I replace brake pads at 2mm?

You should follow the manufacturer’s recommended minimum brake pad thickness. In most cases, you’ll want to replace brake pads when they get down to about 3mm. While you can sometimes get away with 2mm, that is right around where the metal wear indicator gets exposed and causes a squealing sound against the disc.

How can you tell the thickness of brake pads without removing the wheels?


  1. Cut the straw where you have marked it.
  2. Place the cut-off end of the straw next to your ruler and mark 5mm from the end.
  3. Move the mark to 0mm on your ruler and take your final measurement.
  4. If your brake pads are 4mm and less, consider replacing them.

What is a good brake lining thickness?

Ideally, your brake pads should be thicker than 6.4 mm (¼ inches) for proper functioning. If it’s thinner than this, consider getting a replacement soon. Most car mechanics also agree that the bare minimum brake pad thickness is 3.2 mm (⅛ inches).

Is 6 mm on brake pads good?

If the brake pads thinnest pad thickness is at 6mm then what the mechanic most likely recommends is to have the brakes checked in a about 1000-2000 miles to see if they will be needed then. Most brakes pads that are worn to 3mm is recommended for immediate replacement of the pads and resurface or replace the rotors.

Can I check my own brake pads?

On many vehicles, you can see the brake pad through the holes in the wheel. To check the life of the brake pad, you need to determine its thickness. You might need a flashlight to get a good look at the brake pad. If the pads look thin, less than 1/4″, it might be time to get them replaced.

How many mm should be on good brake pads?

Recommended Brake Pad Thickness If you are purchasing new brake pads, then you will want their friction material to be around 10 to 12 millimeters . This is the standard thickness size that you will see for most new brake pads. It should take about 50,000 miles (more or less) for the thickness to 3 to 4 millimeters.

Does brake pad thickness matter when buying new pads?

When you are looking to buy new brake pads, you shouldn’t just look to satisfy the minimum thickness requirements of the friction material. If you do this, then it won’t take long before the thickness decreases and falls below the minimum required thickness level.

Should I replace brake pads at 4mm?

Therefore, anywhere from 3mm to 4mm is the recommended thickness to replace brake pads in most cases. You may be able to get away with slightly less thickness, but certainly nothing less than 2mm. At that point, braking performance can suffer and damage to your brake rotors is more likely. Read also: How Long Do Brake Pads Last?

What should brake pads measure?

Brake pads wear down on the inside first, and the most worn area is where you should be measuring. If the pad is measuring at less than 6 mm then you should plan on replacing it soon, and if it is down to less than 3 mm then you will want to replace it immediately so that you do not damage the rotor.