BMW 5 Series Owners & Service Manuals

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.

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.


     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


     Recent destinations

    General information The previous destinations driven to are stored automatically. Open the destination from the last destinations 1. Press the button on the Controller. 2. "Recent destinations". 3. Select the destination. Edit recent destinations 1. Press the button on the Controller. 2. "Recen

     Functional principle

    Depending on the speed, the system is guided by the lane edges or vehicles driving ahead. The position of the lane edges and the vehicle driving ahead is determined with the help of five radar sensors and the KAFAS stereo camera. G30 Installation locations of radar sensors and KAFAS stereo camer

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