How often should tires on family cars be replaced?

[KarterLynn]

Car tire replacement intervals depend on various factors such as tire brand, quality, road conditions, and driving habits, typically ranging between 50,000-80,000 kilometers. Signs indicating tire replacement is needed: Tires must be discontinued when worn to the wear limit indicator (i.e., tread depth below 1.6mm) or when showing signs of aging. For instance, if there are numerous small cracks at the tread groove base or sidewalls, the tire should be replaced immediately, regardless of whether it's new or old. Other conditions requiring replacement include: deformed treads, damaged bead areas, tires damaged by under-inflation driving (sidewall crushing), chemically corroded tires, and bulging tires. Functions of car tires: Support the vehicle's entire weight, bear the car's load, transmit forces and moments in other directions, deliver traction and braking torque, ensure good adhesion between wheels and road surface to improve vehicle dynamics, braking performance, and passability. Working with the car suspension system, they help cushion impacts during driving and dampen resulting vibrations.