Why you need to replace your brake discs: Brake disc replacement., Why do we need brake discs?

Brake pads connect with a braking disc to stop the wheel’s rotation. The function of a brake disc, as well as its constituent parts, are discussed. Disc brakes use either a single, solid disc of mild steel positioned between the road wheel and the vehicle’s hub or a pair of discs with cooling fins cast between them. Discs with openings in them are called “vented discs.” Carbon and ceramic are used in some high-end vehicles instead of mild steel since they are often lighter and more resilient.

The major reason some discs have grooves or holes drilled into them is to let the gases created by the friction between the disc and pads escape during hard or extended braking. When you press the brake pedal, the two brake pads on either side of the disc are “clamped” onto its surface. The vehicle’s speed is reduced due to the disc’s reduced rotational velocity due to friction.

Typical symptoms that require brake discs to be replaced.

  • Disturbing sounds, especially grinding, when applying the brakes.
  • When applying the brakes, the vehicle begins to veer to one side.
  • After an inspection, you see or are told that the disc surfaces have scores, pit holes, or cracks.

It is important to remember that a light coating of fine rust on a mild steel disc following rain is very natural and will wipe off after several uses of the brakes.

What happens during a brake disc replacement?

Changing the brake discs and pads is a common maintenance task for any mechanic and can be done on the roadside or in the garage, depending on the circumstances.

Aside from minor details, the products of different manufacturers are essentially identical.

  • Loosen the wheel nuts.
  • Place the car up on axle or chassis stands and lock it down.
  • If necessary, remove the calliper’s holding bolts.
  • Take out the worn-out pads and discs.
  • Purge as much dust and debris as you can from the parts.
  • Insert the replacement discs and pads.
  • Put the screws back in place.
  • Put the wheel back on, set the parking brake, and tighten the wheel bolts.
  • Set the brake pads at a stop, and then give the car a quick spin around the block to ensure everything is in order.


Wearing brake discs poses a significant safety risk, so they must be checked and changed at regular intervals. Grooves can form from daily use, and uneven wear from dust, contaminants, or hard pad material can also occur. Therefore there is a need for brake disc replacement for every automobiles.