Washington State Department of Licensing Knowledge Test

How often should you check your tire tread depth to ensure safety?

1. Once a month

2. Once every three months

3. Every six months

4. Only when you notice a problem

The correct answer is: Once a month

Regularly checking your tire tread depth is crucial for safe driving, as it directly impacts your vehicle's traction and handling. Doing this once a month helps maintain optimal performance and ensures that your tires are in good condition. Adequate tread depth is essential for effective braking, especially on wet or slippery roads, where tires need grooves to channel water away and prevent hydroplaning. Frequent inspections can help catch issues early, allowing you to replace worn tires before they compromise your safety. By making this a monthly routine, you are more likely to spot any irregular wear patterns or damage, ensuring your vehicle remains safe and reliable.