Driving in the rain is rarely an enjoyable experience for anyone. Nonetheless, many drivers underestimate the dangers of hydroplaning. Tread depth is a key contributor to a tire's ability to reduce hydroplaning and increase safety.
Ensuring your tires have proper tread depth can greatly reduce your risk of a rear-end collision during wet conditions.
As you can see in this video a vehicle with tires worn to 4/32" will take nearly twice the distance to stop during emergency braking. As you will see, proper tread depth can be the difference between avoiding an accident and causing one.