Driving on worn tires is a major safety hazard. Adequate tread depth is essential for maintaining grip on the road, preventing skids in various weather, and most critically, ensuring effective braking.
On wet, icy, or slick roads, sufficient tread is needed to control braking distance. Proper tread creates the necessary pressure and contact with the road surface. Worn tires cannot channel water away effectively, increasing the risk of hydroplaning and extended, uncontrolled stops.
Experts, including those from Tire Rack, recommend replacing tires when tread depth reaches 3.175mm (4/32 of an inch). This can be checked at home with simple tools. Properly maintained tires typically last up to 70,000 miles, but lifespan varies with driving habits, brand, and vehicle weight.
To maximize tire life and safety, maintain correct tire pressure, rotate tires every 3,000 to 5,000 miles, and avoid aggressive driving maneuvers.