At what millimeter of wear should motor vehicle tires be replaced?

[LaLevi]

Motor vehicle tires need to be replaced when the tread pattern depth wears below 1.6 millimeters. Here are the reasons for tire wear: 1. Excessive wear on both sides: The main causes are insufficient inflation or long-term overload driving. When the inflation is low or the load is heavy, the contact area between the tire and the ground increases, causing both sides of the tire to come into contact with the ground and resulting in premature wear. 2. Excessive wear on one side: The main cause is misalignment of the front wheels. When the camber angle of the front wheels is too large, the outer edge of the tire experiences premature wear. If the camber angle is too small or nonexistent, the inner edge of the tire wears prematurely. 3. Sawtooth-shaped wear on the tread: The main causes are improper front wheel alignment adjustment, abnormal front suspension system positioning, or loose ball joints, which cause normally rolling wheels to slip or continuously change their positioning during driving, leading to sawtooth-shaped tire wear.