What must you check when regularly inspecting your vehicle’s tyres?

When inspecting your vehicle's tyres, it is important to check the air pressure to ensure safe driving and fuel efficiency. The tread depth must be checked because sufficient tread is necessary for good grip, especially in wet conditions, and to prevent hydroplaning. Additionally, looking for external damage, such as cuts, bulges, or embedded objects, helps identify potential risks that could lead to tyre failure. Regularly monitoring all three aspects helps maintain safety and performance according to German traffic regulations.