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How to choose brake discs?

Brake discs and pads are an important part of a car’s braking system. From time to time they, like other components, need to be replaced. In this article, let’s consider what types of brake discs there are and what to focus on when replacing them. And if you’ve been thinking about sending your car in for recycling for a long time, then look no further:

Why is it important to put quality brake discs?

Motorists often wonder – what are the best brake discs to put? They are an important part of the car’s braking system. They are affected by the pads – they rub against the discs, the friction causes the car to slow down to a complete stop. The condition of the brake discs and pads directly affects the braking process of the car.

The use of low-grade elements causes lengthening of the braking distance, the driver will not be able to adequately calculate the distance to stop the car, which will create an accident-dangerous situation on the road.

Types of brake discs

Discs come in different types. Previously, the manufacturing process was made of simple cast iron. Subsequently, the technical properties increased due to the addition of more carbon. Even later, cobalt, nickel and other metal alloys were included in the composition.

Today, good products prefer to be made from a mixture of ceramics and carbon. Their advantages are great strength, low weight, great resistance to hot temperatures. They have a disadvantage – high cost, so they are put on racing cars, expensive sports cars. A more popular type for the ordinary car industry are products made of cast iron alloys with other metals.

Brake discs are divided into:

Ventilated. Are a compound of plates, perforated on top.

Unvented. Composed of a single plate. Also may have perforations, notches.

Perforation could be done by penetrating or buried method. Through cools the product more effectively, but reduces the strength. With buried product is drilled not through – cooling efficiency, removal of burnout residues is lower, but the strength is higher.

Nowadays non-ventilated products are rarely used, they are considered an obsolete mechanism.

Discs are classified by the type of structure:

One-piece. Cast in a single piece of metal, machined to give the desired shape.

Composite. Composed of components: hub, wheel. The hub is made of aluminum, the ring – from cast iron, steel. Components are connected by bolts, preventing accidental disconnection. Products have low weight, high strength, heat dissipation, good combustion products removal. The advantage of composite discs is that worn components can be replaced separately.

How often should brake discs be replaced?

Brake discs require periodic replacement. The frequency of replacement is influenced by factors:

The driving habits of the motorist. Engine braking increases the life of the brake discs and pads, aggressive driving with sharp braking and acceleration – on the contrary.

Weather conditions. In hot weather the brake system experiences an overload.

The level of friction linings contamination.

To understand the onset of the time suitable for replacement, you can be aware of the following signs:

The brake fluid level is dropping.

A grinding sound as the pads interact with the discs

The brake pedal hits when it interacts with the brake pedal. In this case, one of the discs is warped.

Soft brake pedal stroke

The wear of the product is clearly visible. It is not difficult to determine it yourself, using a caliper. Normal parameters of a disc are marked by the manufacturer directly on it.

The car is drifting while driving.

Brake discs and pads require replacement as they wear. On average, you will need two pad replacements per disc and they wear out faster.

How do I choose the right brake discs?

Remember, the most effective is the use of brake discs and pads from the same manufacturer. There are many modifications of brake products. For proper brake disc selection, use your vehicle’s manufacturer’s manual. It has detailed information on the required size of brake discs, which discs are put on the front and which discs are put on the rear.

Brake discs must be replaced in pairs, both on the same axle. It is highly recommended to change the brake pads together with the disks, as the old ones knock out the grooves on the new disks, which worsens the efficiency of the braking system.

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