BMW M5 2011-2017

BMW M5 2011-2017 Exhaust Specifications

Detailed technical specifications and documentation for the 2011-2017 BMW M5 exhaust system. Includes OEM part numbers, torque specs, and performance details for the S63B44TU engine.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the exhaust specifications for the 2011-2017 BMW M5, including key features, measurements, and technical details. This section covers the exhaust system's design, materials, performance characteristics, and maintenance requirements.

How to Use

Use the search function to locate specific exhaust specifications by entering keywords such as 'catalytic converter,' 'muffler,' or 'exhaust pipe diameter.'

Navigate through the documentation using the table of contents or section headers. Each major section is divided into subsections for detailed technical information.

Key Specifications

Exhaust Pipe Diameter

80 mm

Exhaust System Weight

42 kg

Catalytic Converter Efficiency

> 95%

Exhaust Valve Diameter

60 mm

Sound Pressure Level

92 dB at WOT

Available Specifications

Exhaust System Design

This section covers the overall design and layout of the exhaust system, including the placement of key components and their integration with the vehicle's chassis.

Exhaust Layout and Configuration

Dual exhaust system with quad tailpipes
Stainless steel construction for durability and corrosion resistance
Optimized flow path for reduced backpressure
Integrated exhaust valves for adjustable sound and performance
Total length of exhaust system: 4.2 meters

Exhaust Valve System

Electronically controlled exhaust valves
Valve diameter: 60 mm
Adjustable sound levels via Drive Performance Control (DPC)
Valve actuation time: < 300 ms
Operates in both Comfort and Sport modes

Note: The exhaust valve system is designed to enhance both performance and acoustic experience.

Exhaust Components

Detailed information about the individual components of the exhaust system, including materials, dimensions, and performance characteristics.

Catalytic Converters

Dual high-flow catalytic converters
Ceramic substrate with 400 cells per square inch
Operating temperature range: 400°C to 800°C
Efficiency: > 95% for NOx and CO reduction
Dimensions: 150 mm diameter x 300 mm length

Mufflers and Resonators

Twin mufflers with internal baffles for noise reduction
Resonator volume: 12 liters per side
Sound pressure level: 85 dB at 3000 RPM
Weight: 8.5 kg per muffler
Material: Stainless steel with heat-resistant coating

Note: The mufflers are designed to balance sound reduction and performance.

Performance Specifications

Technical details about the exhaust system's performance, including flow rates, backpressure, and acoustic characteristics.

Flow and Backpressure

Maximum exhaust flow rate: 650 CFM (cubic feet per minute)
Backpressure at full load: 0.8 bar
Optimized for 560 HP engine output
Pressure drop across catalytic converters: 0.15 bar
Flow velocity at tailpipe: 45 m/s

Acoustic Performance

Sound frequency range: 80 Hz to 400 Hz
Exhaust note tuned for sporty and aggressive sound
Adjustable sound profiles via DPC
External sound level: 92 dB at WOT (wide-open throttle)
Internal cabin noise: 72 dB at 100 km/h

Note: The acoustic performance is engineered to meet both regulatory and customer expectations.

Maintenance and Service

Guidelines for maintaining and servicing the exhaust system, including inspection intervals and replacement parts.

Inspection and Cleaning

Inspect exhaust system every 15,000 km
Check for leaks, cracks, and corrosion
Clean exhaust tips with non-abrasive cleaner
Inspect exhaust valve operation during service
Verify mounting brackets and hangers for wear

Replacement Parts

Catalytic converter replacement interval: 160,000 km
Muffler replacement interval: 200,000 km
Exhaust gasket torque specification: 25 Nm
Use only OEM parts for replacements
Recommended service life of exhaust valves: 10 years

Note: Regular maintenance ensures optimal performance and longevity of the exhaust system.

Search Specifications

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Component Specifications

General Specifications

Material: Stainless Steel

System Type: Dual Exhaust with M Sport Exhaust System

Configuration: Quad Tailpipes

Part Number: 18307585253

Weight: 28.5 kg

Compliance: EURO 5 Emission Standards

Exhaust Manifold

Material: Cast Iron

Part Number: 11627559521

Bolt Torque: 25 Nm + 90°

Gasket Material: Graphite

Heat Shield Material: Aluminum

Catalytic Converter

Type: Dual Catalytic Converters

Part Number: 18307585254

Substrate Material: Ceramic

Precious Metals: Platinum, Palladium, Rhodium

Operating Temperature: 400°C - 800°C

Efficiency: > 95%

Resonator

Type: Center Resonator

Part Number: 18307585255

Material: Stainless Steel

Diameter: 76 mm

Length: 450 mm

Function: Noise Reduction and Flow Optimization

Muffler

Type: Dual Mufflers

Part Number: 18307585256

Material: Stainless Steel

Diameter: 89 mm

Length: 600 mm

Sound Level: 85 dB at 3000 RPM

Tailpipes

Type: Quad Chrome-Plated Tailpipes

Part Number: 18307585257

Diameter: 80 mm

Length: 250 mm

Material: Stainless Steel with Chrome Finish

Mounting System

Rubber Mounts: Part Number: 18307585258
Quantity: 4
Material: Vulcanized Rubber
Load Capacity: 15 kg each

Brackets: Part Number: 18307585259
Material: Stainless Steel
Bolt Torque: 22 Nm

Operational Parameters

Max Exhaust Gas Temperature: 950°C

Back Pressure Limit: 0.3 bar

Flow Rate: 450 CFM

Warranty: 2 years or 50,000 miles

Maintenance

inspection Interval: Every 15,000 miles

Cleaning Requirements: Use mild detergent and water for exterior cleaning

Gasket Replacement interval: Every 60,000 miles

Torque Check interval: Every 30,000 miles

Diagnostics

Common Issues

Excessive noise due to cracked muffler
Reduced performance due to clogged catalytic converter
Rattling sounds from loose mounts

Diagnostic Tools

OBD-II Scanner for emission codes
Infrared Thermometer for temperature checks
Pressure Gauge for back pressure measurement

Error Codes

P0420 - Catalyst System Efficiency Below Threshold
P0430 - Catalyst System Efficiency Below Threshold (Bank 2)
P2096 - Post Catalyst Fuel Trim System Too Lean (Bank 1)

Service Information Service

Detailed service requirements and schedules for the exhaust system

15,000 miles

12 months

Inspect exhaust system for leaks and damage
Check mounting brackets and rubber mounts
Verify catalytic converter efficiency

Ensure all bolts are torqued to specification

30,000 miles

24 months

Re-torque exhaust manifold bolts
Inspect and clean tailpipes
Check for excessive back pressure

Replace gaskets if signs of wear are present

60,000 miles

48 months

Replace exhaust manifold gasket
Inspect catalytic converter for clogging
Replace rubber mounts if necessary

Perform a full system diagnostic using OBD-II scanner

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the exhaust system configuration on the 2011-2017 BMW M5?

The 2011-2017 BMW M5 features a dual exhaust system with two tailpipes on each side, totaling four tailpipes. The system includes two catalytic converters, two resonators, and two mufflers. The exhaust is constructed from high-quality stainless steel to ensure durability and performance.

What is the diameter of the exhaust pipes on the 2011-2017 BMW M5?

The exhaust pipes on the 2011-2017 BMW M5 have a diameter of 70 mm (2.75 inches). This diameter is optimized for the vehicle's 4.4-liter V8 twin-turbocharged engine, ensuring efficient exhaust flow and minimal backpressure.

Does the BMW M5 exhaust system include a valve-controlled exhaust flap?

Yes, the 2011-2017 BMW M5 is equipped with an electronically controlled exhaust flap. This feature adjusts the exhaust note and backpressure based on driving conditions and the selected driving mode (Comfort, Sport, or Sport+).

What is the recommended maintenance schedule for the exhaust system?

BMW recommends inspecting the exhaust system every 30,000 miles or 24 months, whichever comes first. This includes checking for leaks, corrosion, and ensuring all mounting points and hangers are secure. Replace worn or damaged components promptly to maintain performance and safety.

Can aftermarket exhaust systems affect the vehicle's warranty?

Installing an aftermarket exhaust system may void certain aspects of the vehicle's warranty, particularly if the modification leads to damage or failure of related components. Always consult your BMW dealership or warranty documentation before making modifications.

Factory Service Resources

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

BMW M5 Exhaust System Technical Manual

Coming Soon

Official BMW technical documentation detailing the exhaust system's design, components, and maintenance procedures.

Exhaust System Maintenance Guide

Coming Soon

Step-by-step guide for inspecting and maintaining the BMW M5 exhaust system, including safety precautions and tools required.

BMW Genuine Parts Catalog

Coming Soon

Access the official BMW parts catalog to find genuine exhaust components and related parts for the 2011-2017 M5.

Exhaust System Warranty Information

Coming Soon

Detailed information on warranty coverage for the BMW M5 exhaust system and the implications of aftermarket modifications.

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