Our Tesla Model 3 BFB Carbon Ceramic Rear Big Brake Kit brings the magic of our BFB Front Kit, to the rear! Jump up from the small 13″ stock disc to these giant 15″ carbon discs, while dropping almost 3lbs of unsprung weight per corner.Â
The combination of increased effective radius of the clamping force multiplies the torque that the brake system can exert to slow your vehicle and is, therefore, a perfect combination to pair with a front big brake kit and high-performance tyres.
- 15″ rear rotor with a floating disc for improved brake clamping force and larger thermal capacity
- 9.5% lighter than the stock 1-piece rear rotor (2.7lbs) including all hardware and better efficiency
- Carbon-carbon friction not only provides fade-free operation at high temperatures but also vastly reduced pad wear
- OEM functionality for parking brake and stability control systems
- 20″ or larger wheels are required to clear these massive discs
A NOTE ON BRAKE FLUID & HIGH-PERFORMANCE DRIVING
Brake fluid plays a vital role in the performance and reliability of every brake system, especially so in high-performance driving. A professional brake bleed with high-performance fluid is a requirement for the functionality of our brake system. We recommend using Motul RBF 660 (our go-to fluid) or Endless RF-650 brake fluid. Brake fluid should be flushed frequently for race cars in particular because over time moisture content builds and moisture inherently decreases the temperature limit of the brake fluid.
Brake fluid and its temperature capabilities of it matter especially due to the high temperatures the heavy and powerful Model S generates. The higher temperatures are seen in the brake system transfer heat to the brake fluid and when the brake fluid boils those bubbles create air in the brake lines. Air in the brake lines from the boiled fluid can create a near-instant loss of the brake pedal. Therefore, using a high temp brake fluid and managing brake heat is a key to safe braking for extreme environments.
Loss of pedal is a different symptom than brake fade and typically a symptom of brake fluids exceeding their temperature range (or alternatively a leak in the system) whereas brake fade is often a byproduct of the brake pads exceeding the operating temperature range. In both cases, managing temperatures in a racing environment and adequate testing is typically found in motorsports drivers and are always strongly encouraged to get the best and most safe result. We flush our brake fluid after each race and we monitor caliper temperatures for these same reasons on our race cars.
Please always feel welcome to talk to our team if you have questions about motorsport use. For street driving the temperatures seen are significantly less and this plays a lesser role although the same fluids are suggested for street cars as well.
