Infiniti Q45 1990-1996 Brakes Specifications
Explore detailed brake specifications for the 1990-1996 Infiniti Q45, including brake pads, rotors, calipers, and more. Ideal for maintenance, repair, or performance upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the braking system of the 1990-1996 Infiniti Q45. It is designed to assist owners, mechanics, and enthusiasts in understanding the brake components, maintenance requirements, and performance characteristics. Use this guide to locate specific details about the braking system, including dimensions, materials, and recommended practices for upkeep.
How to Use
Use the search functionality to quickly locate specific terms or components within the document. Enter keywords such as 'rotor diameter' or 'brake pad material' to find relevant sections.
Navigate through the document using the section titles and subsections. Each major section is divided into detailed subsections, making it easy to find specific information about the braking system.
Key Specifications
Front Rotor Diameter
280 mm
Rear Rotor Diameter
280 mm
Brake Pad Thickness (New)
10-12 mm
Stopping Distance (60-0 mph)
120 feet
Brake Fluid Replacement Interval
30,000 miles or 2 years
Available Specifications
Brake System Components
This section covers the primary components of the Infiniti Q45's braking system, including the brake pads, rotors, calipers, and hydraulic system. Learn about the materials, dimensions, and functions of each part.
Brake System Components
This section covers the primary components of the Infiniti Q45's braking system, including the brake pads, rotors, calipers, and hydraulic system. Learn about the materials, dimensions, and functions of each part.
Brake Pads
- Material: Semi-metallic or ceramic
- Thickness: 10-12 mm (new)
- Wear limit: 2 mm
- Replacement interval: Approximately 30,000-50,000 miles
Brake Rotors
- Type: Ventilated front and rear
- Diameter: 280 mm (front), 280 mm (rear)
- Thickness: 22 mm (front), 10 mm (rear)
- Minimum thickness after machining: 20 mm (front), 8 mm (rear)
Brake Calipers
- Type: Single-piston floating
- Material: Aluminum alloy
- Front caliper piston diameter: 54 mm
- Rear caliper piston diameter: 38 mm
Brake System Performance
This section provides insights into the performance characteristics of the Infiniti Q45's braking system, including stopping distance, pedal feel, and heat dissipation capabilities.
Brake System Performance
This section provides insights into the performance characteristics of the Infiniti Q45's braking system, including stopping distance, pedal feel, and heat dissipation capabilities.
Stopping Distance
- 60-0 mph: Approximately 120 feet
- Brake force distribution: 60% front, 40% rear
- ABS: Standard on all models
Pedal Feel and Response
- Pedal travel: Moderate with firm feedback
- Brake booster: Vacuum-assisted
- Hydraulic system pressure: 1,000-1,200 psi
Maintenance and Troubleshooting
This section outlines recommended maintenance practices and common troubleshooting tips for the Infiniti Q45's braking system. Learn how to inspect, replace, and diagnose brake components.
Maintenance and Troubleshooting
This section outlines recommended maintenance practices and common troubleshooting tips for the Infiniti Q45's braking system. Learn how to inspect, replace, and diagnose brake components.
Inspection Intervals
- Brake pads: Every 10,000 miles
- Rotors: Every 20,000 miles
- Brake fluid: Every 30,000 miles or 2 years
Common Issues
- Brake squeal: Often caused by worn pads or glazed rotors
- Soft pedal: May indicate air in the hydraulic system
- Vibration: Usually due to warped rotors
Replacement Guidelines
- Use OEM or equivalent parts for optimal performance
- Torque specifications: 72-80 ft-lbs for caliper bolts
- Bleed brakes after replacing components
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Brakes Specifications
Overview
- Type
- Hydraulic disc brakes
- Configuration
- Front and rear disc brakes
- Platform
- Nissan FM platform
- Material
- Cast iron rotors with semi-metallic pads
- Location
- Front and rear axles
Dimensions
- Front Rotor Diameter
- 11.6 inches (295 mm)
- Rear Rotor Diameter
- 11.1 inches (282 mm)
- Front Rotor Thickness
- 1.1 inches (28 mm)
- Rear Rotor Thickness
- 0.9 inches (23 mm)
- Front Pad Area
- 2.8 square inches (18.1 square cm)
- Rear Pad Area
- 2.5 square inches (16.1 square cm)
- Brake Line Diameter
- 0.25 inches (6.35 mm)
- Master Cylinder Diameter
- 1.0 inches (25.4 mm)
Materials
- Rotors
- Cast iron with heat-resistant coating
- Brake Pads
- Semi-metallic compound
- Calipers
- Aluminum alloy
- Brake Lines
- Steel braided with rubber coating
- Brake Fluid
- DOT 3 or DOT 4
Features
- Braking System
-
- Dual-circuit hydraulic system
- Proportioning valve for rear brakes
- Anti-lock Braking System (ABS)
- Brake assist
- Caliper Design
-
- Floating caliper design
- Single-piston front calipers
- Single-piston rear calipers
- Dust boots for piston protection
- Rotor Design
-
- Vented front rotors
- Solid rear rotors
- Slotted design for heat dissipation
- Anti-rust coating
- Pedal Assembly
-
- Adjustable brake pedal
- Brake light switch integration
- Rubberized pedal pad
- Reinforced mounting bracket
- Safety Systems
-
- ABS with electronic brake-force distribution
- Brake pad wear sensors
- Low brake fluid warning light
- Parking brake with automatic adjustment
Safety Features
- Anti Lock Brakes
-
- 4-channel ABS
- Electronic brake-force distribution
- Traction control integration
- Emergency Braking
-
- Brake assist system
- Dual-circuit hydraulic system
- Automatic brake pressure adjustment
- Parking Brake
-
- Mechanical rear brake system
- Automatic cable adjustment
- Parking brake warning light
Comfort Features
- Pedal Response
-
- Progressive brake pedal feel
- Low pedal effort
- Smooth engagement
- Noise Reduction
-
- Anti-squeal shims on pads
- Vibration dampening rotors
- Insulated brake lines
- Maintenance Ease
-
- Tool-less pad replacement
- Accessible caliper bolts
- Self-adjusting parking brake
- Durability
-
- Corrosion-resistant rotors
- High-temperature brake fluid
- Long-lasting pad material
Accessories
- Performance Upgrades
-
- Slotted and drilled rotors
- Ceramic brake pads
- Stainless steel brake lines
- Maintenance Tools
-
- Brake pad spreader tool
- Caliper piston tool
- Brake bleeder kit
- Replacement Parts
-
- OEM brake pads
- OEM rotors
- Brake fluid reservoir cap
Maintenance
- Service interval
- Every 12,000 miles or 12 months
- Service Items
-
- Inspect brake pads and rotors
- Check brake fluid level
- Inspect brake lines for leaks
- Test parking brake function
- Lubricate caliper pins
- Maintenance Notes
- Use only DOT 3 or DOT 4 brake fluid. Replace brake pads when thickness is less than 3mm.
Warranty
- Brake Pads
- Miles: 24,000Years: 2Coverage: Replacement for wear and tear
- Rotors
- Miles: 36,000Years: 3Coverage: Replacement for warping or cracking
- Calipers
- Miles: 60,000Years: 5Coverage: Replacement for leaks or failure
- Brake Lines
- Miles: 60,000Years: 5Coverage: Replacement for corrosion or leaks
Production Details
- Manufacturer
- Nissan Motor Corporation
- Manufacturing Process
-
- Casting for rotors
- Extrusion for brake lines
- CNC machining for calipers
- Quality Control
- Rotor inspection: Ultrasonic testing for cracksPad Testing: Friction coefficient testingCaliper Testing: Pressure and leak testing
- Sustainability Practices
-
- Recycled materials in brake pads
- Eco-friendly brake fluid disposal
- Energy-efficient manufacturing
- Production Metrics
- Annual Output: 500,000 unitsDefect Rate: 0.1%Lead Time: 4 weeks
Service Information for brakes Service
Maintenance and service requirements specific to this component
- Inspect brake pads and rotors
- Check brake fluid level
- Inspect brake lines for leaks
- Test parking brake function
- Lubricate caliper pins
Ensure brake fluid is at the correct level and free of contamination.
- Replace brake pads if necessary
- Resurface or replace rotors
- Flush and replace brake fluid
- Inspect ABS sensors
- Check brake pedal travel
Use only DOT 3 or DOT 4 brake fluid. Ensure proper bedding of new pads.
- Replace brake pads and rotors
- Inspect and replace brake lines if necessary
- Check and replace calipers if needed
- Test ABS system functionality
- Inspect master cylinder
Perform a full system inspection and replace all worn components.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Are brake pads and rotors for the 1990-1996 Infiniti Q45 interchangeable with other models?
Are brake pads and rotors for the 1990-1996 Infiniti Q45 interchangeable with other models?
The brake pads and rotors for the 1990-1996 Infiniti Q45 are specifically designed for this model and are not interchangeable with other Infiniti or Nissan models. The Q45 features a unique braking system with front and rear rotors measuring 11.1 inches and 11.3 inches, respectively. Always verify part numbers and specifications before purchasing to ensure compatibility.
Q2 What is the recommended maintenance schedule for the brakes on a 1990-1996 Infiniti Q45?
What is the recommended maintenance schedule for the brakes on a 1990-1996 Infiniti Q45?
The brakes on a 1990-1996 Infiniti Q45 should be inspected every 12,000 miles or annually. Brake pads typically last 30,000-50,000 miles, depending on driving conditions. Rotors should be checked for wear and resurfaced or replaced as needed. Brake fluid should be flushed every 30,000 miles or every two years to maintain optimal performance and safety.
Q3 How do I replace the brake pads on a 1990-1996 Infiniti Q45?
How do I replace the brake pads on a 1990-1996 Infiniti Q45?
To replace the brake pads on a 1990-1996 Infiniti Q45, first, lift the vehicle and remove the wheels. Unbolt the caliper and hang it securely. Remove the old brake pads and inspect the rotors. Install the new pads, ensuring they are properly seated. Reattach the caliper and tighten the bolts. Repeat for all wheels, then test the brakes before driving.
Q4 What should I do if my 1990-1996 Infiniti Q45 brakes are squeaking or vibrating?
What should I do if my 1990-1996 Infiniti Q45 brakes are squeaking or vibrating?
Squeaking or vibrating brakes on a 1990-1996 Infiniti Q45 may indicate worn pads, warped rotors, or debris in the braking system. Inspect the pads and rotors for wear or damage. Clean the brake components and apply anti-squeal compound to the back of the pads. If the issue persists, consider resurfacing or replacing the rotors.
Q5 How can I improve the braking performance of my 1990-1996 Infiniti Q45?
How can I improve the braking performance of my 1990-1996 Infiniti Q45?
To enhance braking performance, consider upgrading to high-performance brake pads and slotted or drilled rotors. Ensure the brake fluid is fresh and meets DOT 4 specifications. Regularly inspect and maintain the braking system, including calipers and lines. Properly bed in new brake pads to maximize their effectiveness and longevity.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1990-1996 Infiniti Q45 Service Manual
Coming SoonComprehensive guide covering brake system maintenance, repair, and troubleshooting for the 1990-1996 Infiniti Q45.
Infiniti Q45 Brake System Technical Bulletin
Coming SoonTechnical service bulletin addressing common brake system issues and updates for the 1990-1996 Infiniti Q45.
Infiniti Q45 Brake Parts Catalog
Coming SoonDetailed catalog of OEM and aftermarket brake parts for the 1990-1996 Infiniti Q45, including pads, rotors, and calipers.
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
Diagnostic
Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.
Repair
Expert in both traditional mechanical repairs and modern vehicle systems.
Additional Expertise
Documentation
Created over 500 detailed repair guides and technical documents.
Training
Conducted technical training sessions and contributed to repair databases.
Certifications & Research
Certifications
- ASE Master Technician Certification
- Advanced Diagnostic Specialist
- Hybrid/Electric Vehicle Systems
- Performance Tuning Expert
Research & Community
Actively researches emerging technologies and contributes to automotive forums.
Legal Disclaimer
Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General Information
Warranty & Liability
The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.