BMW 3: Tire inflation pressure

General information

The tire characteristics and tire inflation pressure influence the following:

• The service life of the tires.
• Road safety.
• Driving comfort.
• Fuel consumption.

Safety information

Warning A tire with too little or no tire inflation pressure may heat up significantly and sustain damage.

There is a risk of accident. Regularly check the tire inflation pressure, and correct it as needed, for instance twice a month and before a long trip.

Tire inflation pressure specifications

In the tire inflation pressure table

The tire inflation pressure table contains all tire inflation pressure specifications for the specified tire sizes at the ambient temperature. The tire inflation pressure values apply to tire sizes approved by the manufacturer of the vehicle for the vehicle type.

To identify the correct tire inflation pressure, please note the following:

• Tire sizes of your vehicle.
• Maximum permitted driving speed.

On the Control Display

The current tire inflation pressure values and the intended tire inflation pressure values for the mounted tires can be displayed on the Control Display.

To ensure that they are displayed correctly, the tire sizes must be stored in the system and must have been set for the mounted tires.

The current tire inflation pressure value is located on each tire.

The reference tire inflation pressure value is located in the lower area of the Control Display.

Checking the tire inflation pressure

General information

Tires heat up while driving. The tire inflation pressure increases with the tire temperature.

Tires have a natural, consistent loss of tire inflation pressure.

The displays of inflation devices may under-read by up to 0.1 bar/2 psi.

Checking using tire inflation pressure specifications in the tire inflation pressure table

The tire inflation pressure specifications in the tire inflation pressure table only relate to cold tires or tires at the same temperature as the ambient temperature.

Only check the tire inflation pressure levels when the tires are cold, i.e.:

• Driving range of max. 1.25 miles/2 km has not been exceeded.
• If the vehicle has not moved again for at least 2 hours after a trip.

Check the tire inflation pressure of the emergency wheel in the cargo area regularly, and correct it as needed.

1. Determine the intended tire inflation pressure levels for the mounted tires.

2. Check the tire inflation pressure in all four tires, using a pressure gage, for example.

3. Correct the tire inflation pressure if the actual tire inflation pressure deviates from the intended tire inflation pressure.

4. Check whether all valve caps are screwed onto the tire valves.

Checking using the tire inflation pressure specifications on the Control Display

Via iDrive:

1. "CAR".

2. "Vehicle status".

3. "Tire Pressure Monitor".

4. Check whether the current tire inflation pressure levels deviate from the intended tire pressure value.

5. Correct the tire inflation pressure if the actual tire inflation pressure deviates from the intended tire inflation pressure.

After correcting the tire inflation pressure

With runflat tires: Reinitialize the Flat Tire Monitor.

With Tire Pressure Monitor TPM: The corrected tire inflation pressures are applied automatically. Make sure that the correct tire settings have been made.

With tires that cannot be found in the tire pressure values on the Control Display, reset the Tire Pressure Monitor TPM.

Tire inflation pressures up to 100 mph/160 km/h

For speeds of up to 100 mph/160 km/h and for optimum driving comfort, note the pressure values in the tire inflation pressure table and adjust as necessary.

These pressure values can also be found on the tire inflation pressure label on the driver's door pillar.

Do not exceed a speed of 100 mph/160 km/h.

Tire inflation pressure values up to 100 mph/160 km/h

330i, 330i xDrive

M340i, M340i xDrive

Tire inflation pressures at max. speeds above 100 mph/160 km/h

Warning In order to drive at maximum speeds in excess of 100 mph/160 km/h, please observe, and, if necessary, adjust tire pressures for speeds exceeding 100 mph/160 km/h from the relevant table on the following pages. Otherwise, tire damage and accidents could occur.

For speeds over 100 mph/160 km/h and for optimum driving comfort, note the pressure values in the tire inflation pressure table and adjust as necessary.

Tire inflation pressure values over 100 mph/160 km/h

330i, 330i xDrive

Without high-speed tuning feature

With high-speed tuning feature

M340i, M340i xDrive

Without high-speed tuning feature

With high-speed tuning feature

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