What can cause a gradual loss in tyre inflation pressure?

The combination of driving with a missing valve cap and having a foreign body in the tyre can lead to a gradual loss of tyre inflation pressure.

When a valve cap is missing, it can allow air to escape slowly, especially in varying temperatures. This can cause the tyre pressure to drop over time, affecting vehicle safety and performance.

Additionally, if there is a foreign object embedded in the tyre, it can cause slow punctures, leading to a gradual loss of air. Both situations emphasize the importance of regularly checking tyre integrity and maintaining proper pressure to ensure safety on the road, as stipulated by various German traffic regulations regarding vehicle maintenance.

The third option, accelerating quickly and frequently, typically does not cause a gradual loss of tyre pressure and is more related to wear and tear rather than an immediate loss of air. Hence, it is crucial to recognize all relevant factors affecting tyre performance for safe driving.