Why do you need brake machining?

Machining disc rotors or brake drums can rectify a number of problems such as:

  1. Brake shudder. When applying brake pedal you feel a shaking coming from the steering wheel or from the brake pedal and in some cases the shake can be felt through the whole car.
  2. Brake squeal. When applying the pedal you may hear a high pitched squeal coming from your brakes; causes of this can be glazed (shiny surface on the rotor) rotors or drums, or stones getting in to your brakes.
  3. Scraping sounds coming from your brakes.
  4. Hard spots. When you get your brakes to hot the rotor will actually fuse itself and cause a hard spot, like a welding spot. These can go very deep and in some cases removal would take the rotor below the minimum thickness.
  5. Uneven braking or Pulling. When braking, the vehicle does not stop in a straight line. This can be caused by uneven wear of the brake pads or by liquids (such as brake fluid, oil, grease or water) on the brake pad or disc. What-ever is the cause of the problem, it needs to be identified and fixed urgently as this could cause an accident.

It is recommended that rotors and drums are machined every time disc pads or drum shoes are replaced. This can save time and money as often just changing the pads will not rectify the problem, meaning the brakes will need the pulled apart again to machine the rotor or drum and some cases put a second set of new brake pads may have to fitted. Brakes are the single most important safety part of a vehicle so ensure the job is done completely and correctly.