Perform the following in the iDrive menu to apply the current speed as the speed warning.
BMW iDrive Operating System 7:
- Select "Car"
- "Settings"
- "General settings"
- "Speed warning"
- "Select current speed"
BMW Operating System 8 and newer:
- Select Apps menu
- "Vehicle" or "All"
- "Driving settings"
- "Driver Assistance"
- "Safety and warnings"
- "Speed warning"
- "Adopt current speed"
