BMW 3 Owners & Service Manuals

BMW 3: Securing the vehicle against rolling

General information

The vehicle manufacturer recommends to additionally secure the vehicle against rolling away when changing a wheel.

On a level surface

Wheels and tires

Place wheel chocks or other suitable objects in front and behind the wheel that is diagonal to the wheel to be changed.

On a slight downhill gradient

Wheels and tires

If you need to change a wheel on a slight downhill grade, place chocks and other suitable objects, for instance a rock, under the wheels of both the front and rear axles against the rolling direction.

Lug bolt lock

Concept

The wheel lug bolts have a special coding. The lug bolts can only be released with the adapter which matches the coding.

Overview

The adapter of the lug bolt lock is in the onboard vehicle tool kit or in a storage compartment close to the onboard vehicle tool kit.

Wheels and tires

  • Lug bolt, arrow 1.
  • Adapter, arrow 2.

Unscrewing

1. Attach the adapter to the lug bolt.

2. Unscrew the lug bolt.

3. Remove the adapter after unscrewing the lug bolt.

Screwing on

1. Attach the adapter to the lug bolt. If necessary, turn the adapter until it fits on the lug bolt.

2. Screw on the lug bolt. The tightening torque is 140 Nm.

3. Remove the adapter and stow it after screwing on the lug bolt.

Preparing the vehicle

  • Park the vehicle on solid and non-slip ground at a safe distance from traffic.
  • Switch on the hazard warning system.
  • Set the parking brake.
  • Engage a gear or move the selector lever to position P.
  • As soon as permitted by the traffic flow, have all vehicle occupants get out of the vehicle and ensure that they remain outside the immediate area in a safe place, such as behind a guardrail.
  • Depending on the vehicle equipment, get wheel change tools and, if necessary, the emergency wheel from the vehicle.
  • If necessary, set up a warning triangle or portable hazard warning light at an appropriate distance.
  • Secure the vehicle additionally against rolling.
  • Loosen the lug bolts a half turn.

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