Buick Regal 1997-2004 Brakes Specifications

The 1997-2004 Buick Regal features disc brakes on all four wheels. The front brakes consist of 10.8-inch ventilated rotors with single-piston calipers, while the rear brakes feature 9.5-inch solid rotors with single-piston calipers. The brake system is equipped with ABS (Anti-lock Braking System) for improved stopping performance. Brake pads are designed for durability and heat dissipation, with a minimum thickness specification of 1/8 inch for safe operation.

Regular brake maintenance is critical for safety and performance. Inspect brake pads every 12,000 miles or at the first sign of wear. Replace pads when thickness reaches 1/8 inch or less. Rotors should be resurfaced or replaced if warped or worn below minimum specifications. Brake fluid should be changed every 30,000 miles, and the entire system should be inspected for leaks or damage. Always use GM-approved brake fluid (e.g., DOT 3 or DOT 4).

To replace brake pads, start by loosening the lug nuts and raising the vehicle. Remove the wheels and calipers, taking care not to damage the brake hoses. Remove the old pads and install the new ones, ensuring proper alignment. Reinstall the calipers and tighten the bolts to the specified torque (typically 40-50 ft-lbs). Reinstall the wheels, lower the vehicle, and pump the brake pedal to prime the system. Test the brakes at a safe speed before normal driving.

Common issues include spongy brakes, grinding noises, or ABS light activation. A spongy pedal may indicate air in the system or low brake fluid. Grinding noises often result from worn pads or warped rotors. If the ABS light is on, check for faulty sensors or wiring. Always refer to the owner's manual or a repair manual for specific diagnostic codes and procedures. Inspect all components for wear or damage and replace as needed.

For optimal performance, ensure proper brake pad and rotor alignment. Upgrade to high-performance brake pads designed for your vehicle's weight and driving conditions. Consider installing slotted or drilled rotors for improved heat dissipation and reduced warping. Maintain proper tire pressure and alignment to ensure even weight distribution. Avoid aggressive driving and use engine braking to reduce wear on the brake system. Regularly flush and replace brake fluid to maintain system integrity.