BMW 750i 2008-2015

BMW 750i 2008-2015 Drivetrain Specifications

Detailed technical specifications and documentation for the drivetrain system of the 2008-2015 BMW 750i, including engine, transmission, driveshaft, and differential components.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the drivetrain specifications for the 2008-2015 BMW 750I, including key features, measurements, and technical details

How to Use

Instructions for using search to find specific drivetrain specifications

Instructions for navigating through the drivetrain documentation sections

Key Specifications

Engine Power

450 hp

Transmission Speed

8-speed Automatic

Axle Load Capacity

4000 kg per axle

Suspension Travel

150 mm

Fuel Efficiency

18 mpg (city), 25 mpg (highway)

Available Specifications

Engine Specifications

Detailed description of the engine specifications for the BMW 750I

Engine Type and Power

V8 4.0L Twin-Turbocharged Engine
Maximum Power: 450 hp
Maximum Torque: 550 Nm
Engine Displacement: 4000 cc
Fuel Type: Premium Unleaded Gasoline

Engine Performance

0-60 mph Acceleration: 4.5 seconds
Top Speed: 155 mph (electronically limited)
Fuel Efficiency: 18 mpg (city), 25 mpg (highway)
Emissions Standards: Euro 5 compliant
Cooling System: Liquid-cooled with integrated thermostat

Note: Performance figures may vary depending on driving conditions and vehicle maintenance.

Transmission System

Detailed description of the transmission system in the BMW 750I

Transmission Type and Features

8-speed Automatic Transmission
Gear Shift System: Electronic Gear Selector (EGS)
Transmission Control: Adaptive Drive Control
Torque Converter: High-efficiency hydraulic system
Transmission Fluid Capacity: 6.5 liters

Transmission Performance

Shift Response Time: 0.2 seconds
Maximum Load Capacity: 3500 kg
Transmission Cooling: Integrated oil cooler
Gear Ratio Range: 1:1 to 1:8
Durability: High-grade alloy gears and shafts

Note: Regular transmission fluid checks are essential for optimal performance.

Drive Axle and Suspension

Detailed description of the drive axle and suspension system in the BMW 750I

Drive Axle Specifications

Type: All-Wheel Drive (AWD)
Axle Material: High-strength steel alloy
Axle Length: 2.8 meters
Load Capacity: 4000 kg per axle
Axle Cooling: Integrated lubrication system

Suspension System

Suspension Type: Adaptive Air Suspension
Suspension Control: Electronic Damping Control
Maximum Load: 3500 kg
Suspension Travel: 150 mm
Suspension Fluid: High-viscosity hydraulic oil

Note: Suspension settings can be adjusted via the vehicle's onboard system.

Drivetrain Maintenance

Detailed description of maintenance procedures for the BMW 750I drivetrain

Regular Maintenance Tasks

Engine Oil Change Interval: Every 10,000 miles
Transmission Fluid Check: Every 15,000 miles
Axle Lubrication: Every 20,000 miles
Suspension Inspection: Every 25,000 miles
Coolant System Check: Every 30,000 miles

Critical Maintenance Points

Transmission Fluid Type: BMW ATF-8
Engine Oil Type: BMW High-Performance Oil
Axle Lubricant: BMW High-Viscosity Lubricant
Coolant Type: BMW High-Efficiency Coolant
Maintenance Tools: BMW-specific diagnostic tools

Note: Use only BMW-approved fluids and lubricants for optimal drivetrain performance.

Search Specifications

Search by specification name, value, or description

Component Specifications

Engine

Type: N63B44O0 TwinPower Turbo V8

Displacement: 4.4 L

Compression Ratio: 10.0:1

Max Power: 400 hp @ 5500-6400 rpm

Max Torque: 450 lb-ft @ 1750-4500 rpm

Fuel System: Direct Injection

Emission Standard: EU5

Transmission

Type: 8-speed automatic (GA8HP70Z)

Gear Ratios: 1st: 4.714:1
2nd: 3.143:1
3rd: 2.106:1
4th: 1.667:1
5th: 1.285:1
6th: 1.000:1
7th: 0.839:1
8th: 0.667:1
Reverse: 3.317:1

Final Drive Ratio: 2.813:1

Fluid Type: BMW ATF-3

Fluid Capacity: 9.5 L

Transfer Case

Type: Electronic All-Wheel Drive (xDrive)

Torque Split: 40:60 (front:rear)

Fluid Type: BMW TF-0870

Fluid Capacity: 1.2 L

Differential

Front: Type: Open Differential
Ratio: 2.813:1
Fluid Type: BMW SAF-XO
Fluid Capacity: 1.1 L

Rear: Type: Limited Slip Differential
Ratio: 2.813:1
Fluid Type: BMW SAF-XO
Fluid Capacity: 1.3 L

Driveshaft

Material: Aluminum

Length: 1.2 m

Joint Type: CV Joint

Torque Rating: 450 lb-ft

Axles

Front: Type: CV Axle
Torque Rating: 450 lb-ft
Part Number: 31216793845

Rear: Type: CV Axle
Torque Rating: 450 lb-ft
Part Number: 31216793846

Clutch

Type: Torque Converter

Lockup Speed: 1800 rpm

Fluid Type: BMW ATF-3

Fluid Capacity: 9.5 L

Cooling System

Transmission Cooler: Type: Integrated in Radiator
Fluid Capacity: 1.5 L

Engine Oil Cooler: Type: Air-to-Oil
Fluid Capacity: 0.8 L

Operational Limits

Max Engine Rpm: 7000 rpm

Max Transmission Temp: 250°F

Max Torque Output: 450 lb-ft

Max Speed: 155 mph (electronically limited)

Maintenance

Transmission Fluid Change interval: 60,000 miles

Differential Fluid Change interval: 60,000 miles

Transfer Case Fluid Change interval: 60,000 miles

inspection Interval: 10,000 miles

Diagnostics

Fault Codes: P0700: Transmission Control System Malfunction
P0715: Input/Turbine Speed Sensor Circuit Malfunction
P0720: Output Speed Sensor Circuit Malfunction

Diagnostic Tools

BMW ISTA/D
OBD-II Scanner

Service Information Service

Detailed service requirements and schedules for the drivetrain system

10,000

Inspect transmission fluid level
Check differential and transfer case fluid levels
Inspect driveshaft and axle boots for damage

Perform visual inspection for leaks and wear

60,000

Replace transmission fluid and filter
Replace differential and transfer case fluids
Inspect and lubricate driveshaft joints

Use only BMW-approved fluids and parts

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of drivetrain does the 2008-2015 BMW 750i use?

The 2008-2015 BMW 750i features a rear-wheel-drive (RWD) system as standard, with an optional xDrive all-wheel-drive (AWD) system. The drivetrain is paired with a 6-speed automatic transmission (6HP26) for the 2008-2012 models and an 8-speed automatic transmission (8HP45) for the 2013-2015 models.

What is the torque capacity of the 750i's drivetrain components?

The 6-speed automatic transmission (6HP26) has a torque capacity of up to 600 Nm (442 lb-ft), while the 8-speed automatic transmission (8HP45) can handle up to 700 Nm (516 lb-ft). The rear differential is designed to handle the engine's maximum torque output of 450 Nm (332 lb-ft) for the N63 engine.

How often should the drivetrain fluids be serviced?

BMW recommends servicing the transmission fluid and filter every 60,000 to 100,000 miles (96,000 to 160,000 km) under normal driving conditions. The rear differential fluid should be replaced every 50,000 to 75,000 miles (80,000 to 120,000 km). Always refer to the vehicle's service manual for specific intervals.

What are the signs of drivetrain issues in the 750i?

Common signs of drivetrain issues include unusual noises (e.g., whining, clunking, or grinding), vibrations during acceleration, difficulty shifting gears, and fluid leaks. If any of these symptoms occur, it is recommended to have the vehicle inspected by a certified BMW technician.

Can the 750i's drivetrain handle performance upgrades?

The drivetrain components of the 750i are robust but have limitations. While the transmission and differential can handle moderate performance upgrades, excessive torque increases (e.g., from aggressive tuning) may require aftermarket reinforcement or upgrades to avoid premature wear or failure.

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 750i Drivetrain Service Manual

Coming Soon

Official BMW service manual for the 750i drivetrain, including detailed procedures for maintenance and repair.

Transmission Fluid Replacement Guide

Coming Soon

Step-by-step guide for replacing the transmission fluid and filter in the 750i, including recommended fluid types and tools.

Differential Maintenance Tips

Coming Soon

Comprehensive guide to maintaining the rear differential, including fluid specifications and inspection procedures.

xDrive System Overview

Coming Soon

Technical overview of the xDrive all-wheel-drive system, including its operation and maintenance requirements.

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