BMW 5 Series: Tire pressures
Optimum adjustment of tire pressure is necessary for the following reasons:
- Best possible driving dynamics.
- Maximum utilization of tire service life.
- Reduction of the fuel consumption.
- Optimum operation of various suspension control systems.
For this, the physical principles should be observed in combination with pressure and temperature.
The following rule of thumb applies: So a temperature change for every +/- 10 ºC or +/- 18 ºF relates to an increase or decrease in tire pressure of roughly +/- 0.1 bar or 1.4 psi. Please refer to the temperature chart below.
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Temperature chart
The tire pressures specified by the manufacturer apply for summer and winter operation, irrespective of the temperature. However, it must be observed that due to the seasonal temperature differences, the tire pressures should be checked frequently.
Cold Tire pressure
If the tire air temperature is the same as the current ambient temperature, this is referred to as cold tire pressure. The tire pressures should only be changed with a cold tire pressure on vehicles without the electronic tire pressure label.
Warm Tire pressure
During longer trips at higher driving speeds the tire warms up due to the friction with the road surface.
The temperature of the tire increases as a result and this is accompanied by an increase in tire pressure.
If there is a significant difference between ambient temperature and tire air temperature this is always referred to as warm tire pressure. Avoid changing the tire pressures when the tire is warm on vehicles without the electronic tire pressure label.
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Electronic tire pressure label
Technical functional description
An electronic tire pressure label is being used for the first time at BMW.
The tire pressure label sticker
has been supplemented in the G30 by an additional user menu
System overview
The electronic tire pressure label is an extension to the vehicle software.
No additional components
are required for the integration of this new function. All the information is
supplied by sensors
Tire selection: special sizes
Special sizes (special approval) which are not listed in the menu must be
entered by selecting "Other
tires".
Entering tire special sizes in the electronic tire pressures label on the G30
Special
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ParkNow app
ParkNow can also be used on a smartphone; the ParkNow app must be installed
for this.
ParkNow app
Registration
Select destination or parking zone
Start parking
Payment process
Menu
The ParkNow function can be launched from a number of menus in the vehicle:
Navigation menu
ConnectedDrive m
Concept, General information, Safety information
Concept
The system provides assistance in parking and
maneuvering. The area around the vehicle is
shown on the Control Display.
General information
Several cameras capture the area from different
selectable perspectives. In addition, assistance
functions, for instance guidelines, can be faded
into t
