Infiniti M45 2003-2004 Brakes Specifications
Infiniti M45 2003-2004

Infiniti M45 2003-2004 Brakes Specifications

Explore the detailed brake specifications for the 2003-2004 Infiniti M45, including rotor dimensions, pad types, caliper configurations, and fluid requirements. Ideal for maintenance, repair, and performance upgrades.

Updated

Overview Specifications

This document provides detailed specifications and information about the braking system of the 2003-2004 Infiniti M45. It is designed to help users understand the technical aspects of the brakes, including components, performance, and maintenance. Use the search functionality to quickly locate specific details or navigate through sections to explore comprehensive information about the braking system.

How to Use

Use the search bar to enter keywords related to the brakes, such as 'rotor size' or 'brake pad material'. The system will highlight relevant sections and subsections for quick access.

Scroll through the document or use the table of contents to jump to specific sections. Each section is organized into subsections with detailed technical points for easy reference.

Key Specifications

Front Rotor Diameter

12.6 inches (320 mm)

Rear Rotor Diameter

12.1 inches (308 mm)

Stopping Distance (60-0 mph)

120 feet (36.6 meters)

Brake Fluid Type

DOT 4

Service Interval (Brake Pads)

12,000 miles (19,312 km)

Available Specifications

Brake System Components

This section covers the primary components of the Infiniti M45's braking system, including the rotors, calipers, pads, and hydraulic system. Understanding these components is essential for maintenance and performance optimization.

Front Brake Rotors
  • Diameter: 12.6 inches (320 mm)
  • Thickness: 1.1 inches (28 mm)
  • Ventilated design for improved heat dissipation
  • Material: High-carbon cast iron
Rear Brake Rotors
  • Diameter: 12.1 inches (308 mm)
  • Thickness: 0.8 inches (20 mm)
  • Solid design for consistent performance
  • Material: High-carbon cast iron
Brake Calipers
  • Front: Dual-piston aluminum calipers
  • Rear: Single-piston aluminum calipers
  • Lightweight construction for reduced unsprung weight
  • Corrosion-resistant coating

Brake Performance

This section focuses on the performance characteristics of the Infiniti M45's braking system, including stopping distance, pedal feel, and heat management.

Stopping Distance
  • 60-0 mph: 120 feet (36.6 meters)
  • 80-0 mph: 210 feet (64 meters)
  • ABS-assisted braking for optimal control
  • Consistent performance in wet and dry conditions
Pedal Feel
  • Firm and responsive pedal feedback
  • Short pedal travel for quick engagement
  • Progressive braking force distribution
  • Minimal brake fade under heavy use

Maintenance and Service

This section provides guidance on maintaining the braking system, including recommended service intervals, inspection points, and replacement parts.

Service Intervals
  • Brake pad inspection every 12,000 miles (19,312 km)
  • Rotor inspection every 24,000 miles (38,624 km)
  • Brake fluid flush every 30,000 miles (48,280 km)
  • Caliper lubrication during pad replacement
Replacement Parts
  • OEM brake pads recommended for optimal performance
  • Aftermarket rotors available for upgraded performance
  • Use DOT 4 brake fluid for compatibility
  • Ensure proper bedding-in of new pads and rotors

Brakes Specifications

Overview

Type
Hydraulic Disc Brakes
Configuration
Four-wheel disc brakes
Platform
FM platform
Material
Cast iron rotors with ceramic pads
Location
Front and rear axles

Dimensions

Front Rotor Diameter
12.6 inches (320 mm)
Rear Rotor Diameter
11.7 inches (297 mm)
Front Rotor Thickness
1.1 inches (28 mm)
Rear Rotor Thickness
0.8 inches (20 mm)
Front Pad Thickness
0.5 inches (12.7 mm)
Rear Pad Thickness
0.4 inches (10.2 mm)
Brake Line Diameter
0.25 inches (6.35 mm)

Materials

Rotors
Cast iron with anti-corrosion coating
Brake Pads
Ceramic composite
Calipers
Aluminum alloy
Brake Lines
Stainless steel braided

Features

Performance
  • High-temperature resistance
  • Enhanced stopping power
  • Reduced brake fade
Durability
  • Corrosion-resistant rotors
  • Long-lasting ceramic pads
  • Reinforced brake lines
Technology
  • Anti-lock Braking System (ABS)
  • Electronic Brakeforce Distribution (EBD)
  • Brake Assist (BA)
Comfort
  • Low noise operation
  • Smooth braking feel
  • Minimal dust generation
Maintenance
  • Wear indicators
  • Easy pad replacement
  • Rotor resurfacing capability

Safety Features

Active Safety
  • ABS for wheel lock prevention
  • EBD for optimal braking force
Passive Safety
  • Heat-resistant materials
  • Reinforced brake lines
Emergency Features
  • Brake Assist for sudden stops
  • Parking brake with automatic hold

Comfort Features

Noise Reduction
  • Ceramic pads for quiet operation
  • Vibration dampening rotors
Pedal Feel
  • Linear braking response
  • Adjustable pedal sensitivity
Dust Management
  • Low-dust pad material
  • Dust shields on rotors

Accessories

Upgrades
  • Performance rotors
  • High-performance pads
  • Stainless steel brake lines
Tools
  • Brake pad spreader
  • Rotor resurfacing tool
  • Brake fluid tester
Maintenance Kits
  • Pad and rotor kit
  • Brake fluid flush kit
  • Caliper service kit

Maintenance

Service interval
Every 15,000 miles or 12 months
Service Items
  • Inspect brake pads and rotors
  • Check brake fluid level
  • Test brake line integrity
  • Lubricate caliper pins
  • Inspect parking brake mechanism
Maintenance Notes
Replace brake fluid every 30,000 miles or 2 years

Warranty

Brake Pads
Miles: 30,000
Years: 2
Coverage: Material defects
Rotors
Miles: 50,000
Years: 3
Coverage: Warping and cracking
Calipers
Miles: 70,000
Years: 5
Coverage: Seal and piston failure
Brake Lines
Miles: Lifetime
Years: Lifetime
Coverage: Leaks and corrosion

Production Details

Manufacturer
Nissan Motor Co., Ltd.
Manufacturing Process
  • Precision casting for rotors
  • High-pressure molding for pads
  • CNC machining for calipers
Quality Control
Rotor inspection: Ultrasonic testing for defects
Pad Testing: Friction coefficient verification
Caliper Testing: Pressure and leak testing
Sustainability Practices
  • Recycled materials in pads
  • Eco-friendly coatings on rotors
  • Energy-efficient manufacturing
Production Metrics
Annual Output: 500,000 units
Defect Rate: 0.01%
Lead Time: 4 weeks

Service Information for brakes Service

Maintenance and service requirements specific to this component

15,000
12
  • Inspect brake pads and rotors
  • Check brake fluid level
  • Test brake line integrity
  • Lubricate caliper pins
  • Inspect parking brake mechanism

Ensure proper torque on all bolts

30,000
24
  • Replace brake fluid
  • Resurface or replace rotors if necessary
  • Inspect caliper seals
  • Check ABS sensor functionality
  • Test brake pedal response

Use manufacturer-recommended brake fluid

60,000
48
  • Replace brake pads
  • Replace rotors if worn
  • Inspect and replace brake lines if needed
  • Test parking brake efficiency
  • Perform full system bleed

Critical to replace all components in pairs

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Are the brakes for the 2003-2004 Infiniti M45 compatible with other Infiniti models?

The brakes for the 2003-2004 Infiniti M45 are specifically designed for this model and may not be compatible with other Infiniti vehicles. The M45 uses a unique brake system with front rotors measuring 320mm and rear rotors at 308mm. Always verify compatibility using the vehicle's VIN or consult a professional before purchasing or installing brakes for other models.

Q2

What is the recommended maintenance schedule for the brakes on a 2003-2004 Infiniti M45?

The brakes on a 2003-2004 Infiniti M45 should be inspected every 12,000 miles or annually, whichever comes first. Brake pads typically last 30,000-50,000 miles, while rotors may need replacement every 50,000-70,000 miles. Regularly check brake fluid levels and replace it every 30,000 miles or as specified in the owner's manual to ensure optimal performance and safety.

Q3

How do I replace the brake pads on a 2003-2004 Infiniti M45?

To replace the brake pads on a 2003-2004 Infiniti M45, first, lift the vehicle and remove the wheels. Unbolt the caliper and hang it securely to avoid damaging the brake line. Remove the old brake pads and clean the caliper bracket. Install the new pads, ensuring they are properly seated. Reattach the caliper, tighten the bolts, and reinstall the wheels. Test the brakes before driving.

Q4

What should I do if my 2003-2004 Infiniti M45 brakes are squeaking or vibrating?

Squeaking or vibrating brakes on a 2003-2004 Infiniti M45 may indicate worn brake pads, warped rotors, or debris in the braking system. Inspect the pads and rotors for wear or damage. If the rotors are warped, they may need resurfacing or replacement. Clean the brake components thoroughly and apply brake grease to the back of the pads to reduce noise.

Q5

How can I optimize the braking performance of my 2003-2004 Infiniti M45?

To optimize braking performance, use high-quality brake pads and rotors designed for the 2003-2004 Infiniti M45. Regularly inspect and maintain the brake system, including fluid levels and pad thickness. Avoid aggressive driving, which can overheat the brakes. Consider upgrading to performance brake components if you frequently drive in demanding conditions.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

2003-2004 Infiniti M45 Service Manual

Coming Soon

Comprehensive guide covering brake system maintenance, repair, and troubleshooting for the 2003-2004 Infiniti M45.

Infiniti Technical Service Bulletin for Brake Systems

Coming Soon

Latest updates and fixes for brake-related issues in the 2003-2004 Infiniti M45, including recalls and performance improvements.

Infiniti M45 Brake Parts Catalog

Coming Soon

Detailed catalog of OEM and aftermarket brake components for the 2003-2004 Infiniti M45, including pads, rotors, and calipers.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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