Brake discs

Brake discs are key components of the braking system, responsible for stopping the vehicle in any situation. Combined with the brake pads, discs convert kinetic energy into heat, enabling precise and efficient braking. At Global Parts, you'll find a wide selection of used car parts , including brake discs, ideal for BMW , Audi , Mercedes , Volkswagen , Mini , and more .

What are brake discs and how do they work in practice?

A brake disc is a metal component mounted directly to the wheel hub, which rotates with the wheel as you drive. When you press the brake pedal, the brake pads press against the disc surface, generating friction and slowing the wheel. In typical passenger cars, disc diameters range from 240 to 348 mm, and their working thickness is strictly specified by the vehicle manufacturer. For example , BMW E90 front brake discs differ in parameters from the versions used on the rear axle, similarly to the Audi A3 8P rear brake discs, which have a different design than the front discs.

What functions do brake discs perform?

Brake discs play a key role in driving safety:

• Effective braking – Thanks to their cooperation with the brake pads, the discs ensure quick and precise stopping of the vehicle.
• Heat dissipation – Brake discs prevent the braking system from overheating, ensuring consistent braking performance.
• Stability when braking – Good quality discs minimize vibrations and ensure even braking.

Types of brake discs and their applications

Modern vehicles use several types of brake discs, tailored to the vehicle's weight, engine power, and driving characteristics. The most common are solid discs (primarily on the rear axle) and ventilated discs, which, thanks to air channels, dissipate heat more effectively. Models such as the BMW E60 use front brake discs or the Mini Cooper R56 brake discs. Ventilated discs are standard on the front axle. Alternatively, slotted or perforated discs improve surface cleaning and braking stability under heavy use.

Why is it worth taking care of brake discs ?

Worn or damaged brake discs can lead to reduced braking performance and an increased risk of accidents. Typical symptoms include:

• Squealing or grinding noises when braking – This may indicate worn brake discs or pads.
• Steering Wheel Vibration – Uneven disc wear can cause vibration when braking.
• Extended stopping time – Discs that are too thin or damaged reduce the effectiveness of the braking system. If you need a replacement, you'll find the right used car parts at Global Parts that will restore full functionality of your braking system.

Symptoms and compatibility of discs with other system components

Correctly selected brake discs must be compatible not only with the car model but also with the calipers, pads, and rim diameter. For example , the rear brake discs of the BMW E90 320d use a different caliper type than the more powerful petrol versions. Similarly, the rear brake discs of the BMW X3 E83 vary in diameter and thickness depending on the engine version. This matching ensures proper braking torque and even force distribution throughout the entire system.

How to choose the right brake discs ?

When choosing brake discs, there are several key aspects to consider:

• Vehicle-specific fit – Every braking system has its own specific technical requirements. At Global Parts , you'll find brake discs perfectly matched to BMW , Audi , Mercedes , Volkswagen , Mini , and more .
• Technical condition – Used discs should be free of cracks, deep scratches and excessive wear.
• Disc Type – Choose between standard, ventilated, slotted or perforated discs, depending on your riding style and technical requirements.

Example compatibility of popular models

Vehicle model	Axis	Disc type	Diameter range (mm)
BMW E87	Front	Ventilated	286–312
Audi A3 8P	Back	Full	253–255
BMW E90	Front	Ventilated	286–330
Mini Cooper R56	Front	Ventilated	259–294

Why choose used brake discs ?

Used car parts , such as used brake discs , is an economical solution that allows you to save money while maintaining high quality. By choosing used braking system components, you gain:

• Lower costs – Used discs are much cheaper than new ones, but offer just as high quality.
• Ecology – Recycling parts supports environmental protection and reduces waste.
• A wide range – In our store you will find used brake discs for the most popular car brands.

How to take care of brake discs ?

To ensure that your brake discs function reliably for a long time, it is important to follow a few rules:

• Regular inspections – Check the condition of the discs during periodic technical inspections of the braking system.
• Replace discs in pairs – To ensure even braking, always replace discs on one axle at a time.
• Avoid hard braking – Excessive load can accelerate disc wear. If replacement is necessary, Global Parts has the right used car parts to restore the efficiency and safety of your braking system.

FAQ - Frequently asked questions about brake discs

Question	Answer
What are brake discs?	Brake discs are components of the braking system that work together with the pads to effectively slow down the vehicle.
How does a brake disc work?	When braking, the pads press against the rotating disc, converting the energy of motion into heat.
What is the difference between ventilated and solid discs?	Ventilated discs have cooling channels, which improve heat dissipation and braking stability.
Are the brake discs different front and rear?	Yes, the discs on the front axle are usually larger and more loaded than the rear ones.
How to choose discs for BMW E90 320d?	The engine capacity, mounting axis and disc diameter provided for a given version must be taken into account.
Do the discs fit different engine versions?	There may be different variants of discs within one model, so technical compatibility is crucial.

Summary: Brake discs at Global Parts automotive store

Brake discs are the foundation of the braking system, ensuring safety and control of the vehicle in every situation. By maintaining their technical condition, you can improve braking performance and avoid costly repairs. The Global Parts automotive store invites you to browse our wide selection of original used car parts . Whether you're looking for car parts for BMW , Audi , Volkswagen , Mercedes, Mini , and more, you'll find them at competitive prices. We strive to ensure every customer finds the right parts for their car, and if you have any questions or concerns about selecting the right components, we're happy to help! Please contact us – we're here to help! For more information and interesting facts, visit our automotive blog .