What do you use to measure the thickness of a brake rotor?

Use a micrometer at the thinnest point on the surface of the rotor where it meets the pads to measure the minimum operational thickness. If your rotor needs to be cut or has worn passed this thickness, you’ll need new rotors. You may also discover your rotor has Disc Thickness Variation.

Can you sand brake rotors?

Rotors can be sanded in various ways. One is to apply a non-directional finish with 80- to 120-grit sandpaper on a flat sanding block. You’ll see the scratches develop as you use the sanding disc. You really don’t want to remove any material; just simply scratch the surface.

What is the minimum rotor thickness?

Magura’s minimum recommended rotor thickness is 1.7mm. At that thickness, Magura recommends replacing them for several reasons, one being reduced heat stability.

Can you smooth out a rotor?

Resurfacing Your Rotors Resurfacing rotors removes some of their metal, until the surface is smooth and even again. However, every rotor has a minimum thickness that is established by the vehicle manufacturer. If the rotror requires resurfacing and cannot maintain the minimum thickness, it will have to be replaced.

How do you tell if your rotors are glazed?

How to Tell If Your Brake Pads Are Glazed

1. Examine the brake pads visually.
2. Listen for a squeaking or squealing sound when you press down on the brakes.
3. Listen for a continuous scratching or squeaking sound even when you don’t press on the brakes.

How do you know if your rotors are glazed?

What’s the minimum thickness for a brake rotor?

There is scoring greater than 1.5 mm (0.060 in). All brake rotors have a minimum thickness dimension cast into them. This dimension is the minimum wear dimension and not a refinish dimension. Do not use a brake rotor that, after refinishing, will not meet the specifications shown on the rotor.

What is the thickness of a front brake discard?

Front Brakes: Rotor Thickness (new) 32.2 mm, 1.27 in Minimum Rotor Machining Thickness 31.7 mm, 1.25 in Rotor Discard Thickness (see note) 30.7 mm, 1.21 in

What are the different types of brake rotors?

Every brake rotor has the manufacturer’s indicated thickness when new as well as the minimum allowable for safe use. The 3 types of brake rotor thickness specs are: Nominal rotor thickness- the thickness of the brake disc when new. “Machine to” rotor thickness- the least thickness allowable when resurfacing or machining the brake disc.

What’s the difference between nominal and discard rotors?

Nominal rotor thickness- the thickness of the brake disc when new. “Machine to” rotor thickness- the least thickness allowable when resurfacing or machining the brake disc. Discard rotor thickness- the thickness which, when reached, warrants a replacement of the brake disc. A brake rotor’s thickness can reduce due to a number of factors.