BMW 3 Series 2020-2023 Tire Chains User Manual
With the mounting of tire chains on unsuitable tires, the tire chains can come into contact with vehicle parts. There may be a risk of accident or risk of damage to property. Only mount tire chains on tires that are designated by their manufacturer as suitable for the use of tire chains.
Insufficiently tight tire chains may damage tires and vehicle components. There may be a risk of accident or risk of damage to property. Make sure that the tire chains are always sufficiently tight. Retighten as needed according to the tire chain manufacturer’s instructions.
Fine-link tire chains
The manufacturer of the vehicle recommends the use of fine-link tire chains. Certain types of fine-link tire chains have been tested by the manufacturer of the vehicle and recommended as road-safe and suitable.
Information regarding suitable tire chains is available from a dealer’s service center or another qualified service center or repair shop.
Use only in pairs on the rear wheels, equipped with tires of the following size:
- 225/45 R18.
- The wheel size and rim offset are located on the inside of the wheel.
Follow the tire chain manufacturer’s instructions.
Do not initialize the Flat Tire Monitor after mounting tire chains, as doing so may result in incorrect readings.
Do not reset the Tire Pressure Monitor after mounting tire chains, as doing so may result in incorrect readings.
When driving with tire chains, briefly activate Dynamic Traction Control DTC to optimize the drive power.
- Maximum speed with tire chains
Do not exceed a speed of 30 mph/50 km/h when using tire chains.
Tire pressure monitor
The Tire Pressure Monitor monitors the tire pressure and issues a warning if the tire pressure has dropped.
Sensors in the tire valves measure the tire inflation pressure and tire temperature.
The system detects the mounted tires automatically. The system displays the predefined nominal pressure values on the Control Display and compares these values to the actual tire pressure values.
If tires are being used that are not specified on the tire inflation pressure details on the vehicle, such as tires with special approval, the system needs to be actively reset. The system will then take over the actual tire inflation pressures as the target pressures.
When operating the system, also note the information found in the Tire inflation pressure chapter.
For tire inflation pressure, refer to page 316.
The display of the target pressures is not a substitute for the tire inflation pressure details on the vehicle. Incorrect entries in the tire set‐tings can lead to incorrect target tire inflation pressure values. In this case, it cannot be guaranteed that the notification of a tire pressure loss will be reliable. There is a risk of injury and risk of damage to property. Ensure that the tire sizes of the mounted tires are displayed correctly and match the details on the tires and on the vehicle.
The following conditions must be met for the system; otherwise, reliable message of a tire pressure loss is not assured:
- After each tire or wheel change, the system detects and updates the mounted tires and displays them after a short trip on the Control Display.
Enter the information about the mounted tires in the tire settings when the system does not automatically detect the tires.
The Tire Pressure Monitor does not activate until after driving for a few minutes:
After a tire or wheel replacement.
After a reset, for tires with special approval.
After changing the tire set.
- For tires with special approval:
- After a tire or wheel replacement, a reset was performed with the correct tire inflation pressure.
After the tire inflation pressure was adjusted to a new value, a reset was performed.
- Wheels with wheel electronics.
The information about the mounted tires can be entered in the tire settings if the system does not automatically detect the tires.
The tire sizes of the mounted tires can be gathered from the tire inflation pressure details on the vehicle or directly on the tires.
The tire details do not need to be re-entered when the tire pressure is corrected.
For summer and winter tires, the tire details entered last are stored. After a tire or wheel re‐placement, the settings of the tire sets used last can be selected.
- “Vehicle status”
- “Tire Pressure Monitor”
- “Tire settings”
- “Tire selection”
- “Tire type”
- Select the tire type that is mounted on the rear axle.
For tires with special approval:
Observe further proceeding in the perform a reset section.
- Select the maximum road speed that will be used with the tires.
- “Save tire settings”
The measurement of the current tire inflation pressure is started. The measurement progress is displayed .
The system status can be displayed on the Control Display, e.g., whether or not the system is active.
- “Vehicle status”
- “Tire Pressure Monitor” The current status is displayed.
Current tire pressure
The current tire pressure is displayed for each tire.
The current tire inflation pressures may change during driving or depending on the outside temperature.
Current tire temperature
Depending on the model, the current tire temperatures are displayed.
The current tire temperatures may change while driving or due to the outside temperature.
The target pressure for the tires on the front and rear axles is displayed.
The specified target pressures take the influence of driving and outside temperature on the tire temperature into account. The appropriate target pressure is always displayed, independent of the weather situation, tire temperatures, and travel times.
The displayed target pressure may change and may differ from the tire inflation pressure details on the door pillar of the driver’s door. The tire inflation pressure can thus be corrected to the value of the displayed target pressures.
The target pressure is immediately adjusted if the vehicle load status is changed in the tire settings.
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