Tread wear refers to the gradual loss of the rubber material on the surface of a tire as it makes contact with the road. This wear affects the tire's grip, handling, and overall performance. Regularly checking tread depth is essential for safe driving, as insufficient tread can lead to reduced traction, especially in wet conditions. Factors influencing tread wear include driving habits, road conditions, and tire maintenance. Proper inflation and alignment can help extend the life of tires. Additionally, rotating tires regularly can promote even wear, ensuring that all tires perform optimally throughout their lifespan.