Front ventilated brakes
TechnologieAverage price
250€ - 1200€
Front ventilated brakes represent a major evolution compared to solid brake discs. This is a braking system where the disc is composed of two friction plates separated by vanes or channels. As the wheel turns, these channels create a centrifugal airflow that passes through the disc, thereby dissipating the heat generated by the friction between the pads and the disc. This active cooling is crucial because brake overheating can lead to a dangerous phenomenon known as 'brake fade', where braking efficiency drastically decreases. Mainly used on the front axle, which handles approximately 70% of the braking effort due to weight transfer, ventilated brakes have become standard on almost all modern vehicles, from city cars to luxury sports cars. Their design helps maintain an optimal operating temperature, thus guaranteeing consistent and reliable braking performance, even under heavy use such as driving down mountain passes or sports driving. They directly contribute to the vehicle's active safety and the durability of the braking system components.
Benefits
- ✓Better heat dissipation and optimized cooling.
- ✓Significant reduction in the risk of brake fade.
- ✓More consistent and enduring braking performance.
- ✓Increased lifespan of pads and discs under intensive conditions.
Learn more
Front ventilated brakes
What is a front ventilated brake?
The braking system is one of the most critical safety elements of an automobile. At the heart of this system, on most modern vehicles, are disc brakes. Front ventilated brakes are an upgraded version of this device, specifically designed to optimize heat dissipation. Unlike a solid brake rotor (a simple flat metal plate), a ventilated rotor consists of two thinner discs connected by internal cooling fins. These fins create channels inside the rotor. As the vehicle moves, the rotation of the wheel forces air into these channels from the center of the rotor and expels it outward via centrifugal force. This constant airflow acts as a cooling system, preventing the rotor from reaching excessive temperatures.
How do ventilated brakes work?
The principle of braking relies on the conversion of kinetic energy (the vehicle's movement) into thermal energy (heat) through the friction of the brake pads against the rotors. This intense heat must be evacuated efficiently. If it accumulates, the temperature of the rotor, pads, and brake fluid rises dangerously. This can cause 'brake fade': the pads lose their coefficient of friction and the brake fluid can boil, making the brake pedal feel spongy and ineffective.
This is where the ventilated design proves its full value. The finned structure significantly increases the rotor's surface area in contact with the air. The forced airflow passing through the rotor dissipates heat much faster than a solid rotor could through simple radiation. This active cooling keeps the system within its ideal operating temperature range, ensuring reliable and consistent braking power, even after multiple heavy braking events.
What are the advantages of front ventilated brakes?
The adoption of ventilated brakes, particularly on the front axle which bears the greatest stress, offers major benefits in terms of safety and performance:
- Better thermal dissipation: This is their primary advantage. They can dissipate up to 30% more heat compared to solid rotors of the same diameter, drastically reducing the risk of overheating.
- Reduction of brake fade: By maintaining a lower temperature, they preserve the efficiency of the pads and brake fluid, guaranteeing a consistent pedal response even during spirited driving or in mountainous terrain.
- Increased endurance: They allow for successive hard braking without loss of performance, an essential asset for heavy, powerful, or dynamically driven vehicles.
- Component durability: By limiting temperature peaks, ventilated brakes help extend pad life and prevent rotor warping (distortion).
When should you replace your ventilated brake rotors?
Like any wear item, ventilated brake rotors must be checked regularly and replaced when necessary. Several signs indicate that replacement is imminent. The first is reaching the minimum thickness limit, a dimension engraved on the edge of the rotor by the manufacturer (marked 'MIN TH' followed by a value in millimeters). Other symptoms include vibrations in the steering wheel or brake pedal (a sign of a warped rotor), metallic squealing or grinding noises, or increased stopping distances. Generally, it is recommended to replace the pads and rotors at the same time to ensure optimal performance and even wear. Today, front ventilated brakes are no longer a luxury option but an essential standard equipment on the vast majority of cars, quietly yet effectively contributing to our daily safety.
Finitions équipées
7 finition(s) proposent cet équipement
Audi Audi Cabriolet
S5 Cabriolet (A5 Cabriolet 2nd generation) (2017-2024)
Audi Audi R8
R8 V8 Coupé (1st generation) (2010-2012)
Citroën Citroën DS4
Sport Chic (1st generation) (2011-2018)
Ford Ford Fiesta
ST (7th generation / Mk7) (2018-2023)
Mercedes-Benz Mercedes Classe B
Sport / AMG Line (W246 / 2nd generation) (2015-2018)
Mercedes-Benz Mercedes Classe C
AMG Line (W205) (2014-2021)
Volkswagen Volkswagen Polo
GTI (Polo V) (2010-2017)
Associated equipment
Porsche Ceramic Composite Brake (PCCB)
The Porsche Ceramic Composite Brake (PCCB) is an ultra-high-performance braking system, directly derived from Porsche's motorsport experience. It is designed for the sportiest models in the range and demanding drivers. The core of this technology lies in its brake discs, manufactured from a carbon-fiber-reinforced silicon carbide ceramic composite (C/SiC). This advanced material gives the discs exceptional thermal resistance, virtually eliminating 'fading' (loss of efficiency when hot) even during intensive track use. One of the major assets of PCCB is its weight, reduced by approximately 50% compared to traditional cast iron discs. This significant reduction in unsprung weight translates into a tangible improvement in dynamic handling: steering gains precision, vehicle agility is enhanced, and suspension comfort is optimized. Instantly recognizable by their bright yellow painted brake calipers, PCCB brakes are a symbol of ultimate performance. Beyond their phenomenal stopping power, they offer remarkable longevity in road use and excellent corrosion resistance, making them a lasting investment in safety and driving pleasure.
High-Performance Brakes
High-performance brakes are an essential upgrade for sports and high-powered vehicles, far exceeding the capabilities of standard braking systems. Their architecture is entirely focused on performance, endurance, and precision. They consist of oversized, ventilated brake discs, often drilled or slotted to maximize heat dissipation and combat 'fading' (loss of efficiency due to overheating). These discs are clamped by multi-piston fixed calipers (4, 6, 8 pistons or more), generally of a monoblock design for flawless rigidity. This configuration guarantees uniform pressure on the brake pads, offering a more direct bite and better modulation to the driver. The pads themselves use advanced friction compounds, capable of maintaining their effectiveness at extreme temperatures that standard pads could not withstand. Finally, metal-braided brake lines (aviation-grade) replace rubber ones to eliminate any spongy feeling at the pedal by not expanding under high hydraulic pressure. Each element works in synergy to deliver deceleration as powerful and controlled as the vehicle's acceleration.
Sport Brake Calipers
Sport brake calipers are high-performance braking system components designed to deliver superior stopping power, endurance, and precision compared to standard calipers. Generally made from forged aluminum or machined from a single block (monoblock), they are both lighter and more rigid than traditional cast iron calipers. This increased rigidity prevents flexing under heavy pressure, ensuring a more consistent and direct pedal feel. Their design often incorporates multiple opposed pistons (from 4 to 8, or even more) that apply more uniform pressure to the brake pads, thereby optimizing the contact area with the disc and improving braking efficiency. In addition, their larger volume and optimized design promote better heat dissipation, a crucial factor in combating brake fade (loss of efficiency due to overheating) during intensive use, such as on a track or during dynamic mountain driving. Beyond their technical advantages, sport brake calipers, often painted in bright colors, also serve as a major aesthetic element, signaling the vehicle's performance potential.
ABS
ABS, an acronym for the German 'Antiblockiersystem' or Anti-lock Braking System in English, is an essential active safety feature on modern vehicles. Its primary role is to prevent wheel lock-up during hard braking or on low-grip surfaces (rain, ice, gravel). During emergency braking, a driver may instinctively slam on the brake pedal, causing the wheels to lock. Locked wheels lose all steering control, turning the vehicle into an uncontrollable projectile. The ABS intervenes by modulating the braking pressure very rapidly and selectively on each wheel, several times per second. This system consists of wheel speed sensors, an electronic control unit (ECU), and a hydraulic control unit. When the ECU detects that a wheel is about to lock, it commands the hydraulic unit to release and then reapply brake pressure. This process, felt by the driver as pulsation in the brake pedal, helps maintain optimal grip between the tire and the road. Thus, the driver retains the ability to steer the vehicle to avoid an obstacle while optimizing stopping distance on most surfaces. Mandatory on all new cars in Europe since 2004, the ABS is the cornerstone of many other driver assistance systems such as ESP and traction control.
Rear Disc Brakes
Rear disc brakes are an essential component of modern vehicle braking systems. Unlike drum brakes, which were long used on the rear axle, disc brakes offer superior performance, endurance, and safety. The system consists of a metal disc (rotor) attached to the wheel, a caliper that straddles the disc, and brake pads housed within the caliper. When the driver presses the brake pedal, hydraulic pressure pushes the pads against both sides of the rotating disc. The resulting friction converts the vehicle's kinetic energy into heat, thereby slowing it down. Although the front brakes provide the majority of the braking effort (approximately 70%), the rear brakes are crucial for vehicle stability, braking balance, and the effectiveness of driver assistance systems. Their ability to dissipate heat quickly makes them less prone to 'brake fade' (loss of efficiency due to overheating), ensuring consistent and reliable braking, even under heavy loads. Today, they are essential for the proper functioning of ABS, ESP, and electronic brakeforce distribution (EBD).