You have to remove a defective tyre. In what sequence should you proceed?

The selected sequence is correct because it ensures the safety and security of the vehicle while performing tire maintenance. According to German traffic laws, the first step must always be to secure the vehicle against rolling away. This is crucial to prevent accidents or injuries.

After securing the vehicle, positioning the car jack comes next to elevate the vehicle safely. Loosening the wheel nuts before jacking up the vehicle is also essential; doing this while the tire is on the ground ensures better leverage. Once the vehicle is elevated, you can fully remove the wheel nuts and take off the defective tire.

This careful sequence not only enhances safety but also complies with best practices recommended by traffic rules in Germany, which emphasize the importance of proper vehicle maintenance procedures.