Infiniti FX45 2003-2008 Brakes Specifications

The brakes for the 2003-2008 Infiniti FX45 are designed to meet OEM specifications, ensuring optimal performance and safety. The front brakes typically use a 13.8-inch rotor with a dual-piston caliper, while the rear brakes feature a 13.6-inch rotor with a single-piston caliper. These brakes are compatible with all models within the specified year range. It is essential to verify part numbers with your vehicle’s VIN to ensure compatibility, as there may be minor variations between trims or production years.

Regular maintenance is crucial for the longevity and performance of your brakes. Inspect brake pads and rotors every 12,000 miles or as recommended in your owner’s manual. Replace brake pads when they wear down to 3mm or less. Rotors should be checked for warping, cracks, or excessive wear and replaced if necessary. Brake fluid should be flushed and replaced every 30,000 miles or every two years to maintain optimal hydraulic performance. Always refer to the manufacturer’s guidelines for specific maintenance intervals and procedures.

To replace the brakes on a 2003-2008 Infiniti FX45, start by safely lifting the vehicle and removing the wheels. For the front brakes, remove the caliper bolts and detach the caliper, then take out the old brake pads and rotor. Install the new rotor and brake pads, and reattach the caliper. For the rear brakes, follow a similar process, ensuring the parking brake mechanism is properly adjusted. Use a torque wrench to tighten all bolts to the manufacturer’s specifications. Bleed the brake system if necessary to remove air bubbles and ensure proper brake function.

Common brake issues include squeaking, reduced braking power, or a spongy brake pedal. Squeaking may indicate worn brake pads or glazed rotors, which can be resolved by replacing the pads or resurfacing the rotors. Reduced braking power often results from contaminated brake fluid or worn components, requiring a fluid flush or part replacement. A spongy pedal usually signals air in the brake lines, which can be fixed by bleeding the system. If the problem persists, inspect the master cylinder, brake lines, and calipers for leaks or damage.

To optimize brake performance, use high-quality brake pads and rotors specifically designed for your vehicle. Consider upgrading to performance brake components if you frequently drive in demanding conditions. Ensure proper bedding-in of new brake pads by following the manufacturer’s instructions. Maintain clean brake components by regularly removing dust and debris. Avoid excessive braking, especially during downhill driving, to prevent overheating. Regularly inspect and replace worn parts, and use the recommended brake fluid to ensure consistent hydraulic performance.