Ride Height Measurement: Notes
When performing alignments on BMW vehicle, the ride height must be set and checked before proceeding with any measurement or adjustments. Ride height is measured from the lower edge of the wheel rim to the lower edge of the wheel housing. Ride height specifications are in millimeters. In order to obtain the correct specification, the vehicle and suspension type must be identified. Ride height specifications depend upon rim size (15", 16", 17" etc.), engine size and the type of suspension. There are 4 different types of suspension packages:
- Series - Standard production vehicle
- Low Slung Sports Suspension - This is used on vehicle with Sports Package Option.
- Rough Road Package - For Eastern European Rough roads. Not used in US.
- M Sports Package - Used on Motorsport vehicles or those with M Package Option.
The example shown below is the ride height specifications for an E39 540i (Front Axle).
HEIGHT SPECIFICATION
| Series | ||
| 15" Rim | mm +/- 10 | 579 |
| 16" Rim | mm +/- 10 | 592 |
| 17" Rim | mm +/- 10 | 607 |
| 18" Rim | mm +/- 10 | 620 |
| Low Slung Sports Suspension | ||
| 15" Rim | mm | 559 |
| 16" Rim | mm | 572 |
| 17" Rim | mm | 587 |
| 18" Rim | mm | 600 |
| Rough Road Package | ||
| 15" Rim | mm +/- 10 | 599 |
| 16" Rim | mm +/- 10 | 612 |
| 17" Rim | mm +/- 10 | 627 |
| 18" Rim | mm +/- 10 | 640 |
| M Sports Package | ||
| 15" Rim | mm +/- 10 | 562 |
| 16" Rim | mm +/- 10 | 575 |
| 17" Rim | mm +/- 10 | 590 |
| 18" Rim | mm +/- 10 | 603 |