Tyre Tread Depth and Safety

The video tutorial explains the importance of maintaining proper tyre tread depth for safety, especially in wet conditions. It highlights the legal minimum tread depth of 1.6 millimeters and demonstrates how to measure it using a 20 pence coin. Additionally, it introduces the concept of tread wear indicators, which help determine when tyres need replacing. The tutorial emphasizes the need for timely tyre replacement to ensure optimal performance and safety.

Why is it important to replace tyres before the tread wears too low?

• To increase the speed of the vehicle

• To ensure better performance in wet conditions

• To reduce noise while driving

• To improve fuel efficiency

What is the legal minimum tread depth for tyres?

• 1.2 millimeters

• 2.0 millimeters

• 1.6 millimeters

• 2.5 millimeters

How can you use a 20 pence coin to check if your tyre tread is legal?

• Measure the tyre's circumference with it

• Use it to scratch the tyre surface

• Insert it into the grooves and see if the rim is visible

• Place it on the tyre surface and check for balance

What does the TWI mark on a tyre indicate?

• The tyre's width

• The tyre's weight

• The tread wear indicator

• The tyre's warranty information

What should you do if the tyre tread is level with the ribbed bar of the tread wear indicator?

• Inflate the tyres more

• Replace the tyres

• Rotate the tyres

• Deflate the tyres slightly