BMW M4 2021-present Brakes Specifications

The 2021-Present BMW M4 features a high-performance braking system designed for optimal stopping power and heat dissipation. The front brakes are equipped with fixed 6-piston calipers clamping 380mm ventilated discs, while the rear features single-piston floating calipers with 370mm ventilated discs. The system is compatible with a variety of brake pad compounds, including high-performance options for track use. The M4 also features brake-by-wire technology with configurable modes (Comfort, Sport, Track) for tailored pedal feel and response.

Regular maintenance is critical for maintaining the performance and safety of the braking system. Brake fluid should be replaced every 2 years or 30,000 miles, and the system should be inspected annually for wear. Brake pads should be replaced when thickness reaches 1-2mm, typically every 30,000 to 50,000 miles depending on driving conditions. Rotors should be resurfaced or replaced if they show excessive wear or warping. Always use BMW-approved parts and follow the recommended maintenance schedule in the owner's manual.

To replace the brakes on the 2021-Present BMW M4, start by safely lifting the vehicle and removing the wheels. Inspect the brake components and remove the calipers, taking care not to damage the brake hoses. Remove the old pads and rotors, then install the new components in the reverse order. Ensure all bolts are tightened to the specified torque values. After installation, bleed the brake system to remove any air bubbles and test the brakes thoroughly before driving. Always follow proper safety procedures and consult a professional if unsure.

Common brake issues on the 2021-Present BMW M4 include squeaking noises, spongy pedal feel, or reduced stopping power. For squeaking, inspect the brake pads and rotors for contamination or improper bedding. A spongy pedal may indicate air in the system, requiring a brake bleed. Reduced stopping power could be due to worn pads, warped rotors, or a brake fluid leak. Always inspect the brake fluid level and condition, and consult the owner's manual or a certified technician for advanced diagnostics.

To optimize brake performance on the 2021-Present BMW M4, consider upgrading to high-performance brake pads and rotors designed for track or aggressive street use. Ensure proper bedding-in of new brake components by following a controlled heat cycle process. Use high-temperature brake fluid with a higher boiling point for consistent pedal feel under heavy use. Regularly clean and inspect brake components to prevent contamination and corrosion. For track use, consider adding brake cooling ducts to improve heat management.