Purpose of Tire Struts

The struts are a key component in your car's suspension system. They help balance the ride and smooth out the bumps, and help keep your tires from wearing out.

Identification

  • A strut is an integrated unit that includes several different, crucial parts of your car's suspension system.

Location

  • The struts are located near the two front wheels, on a vehicle with front-wheel drive.

Purpose

  • The struts support the weight of the car, with the springs and shocks helping to control the effect of rough, uneven roads on the movement of the car.

Components

  • Struts include a metal coil spring, a shock absorber contained within the spring housing, a strut bearing, and a steering knuckle. The strut housing is linked to the upper strut bearing and the lower ball joint. The strut pivots with the wheel.

Wear and Tear

  • Struts are durable parts that do not normally need service or replacement until the car reaches at least 100,000 miles. Shock absorbers, however, wear out more quickly. Signs of a worn strut are excessive swaying and/or bouncing, rocking when the brakes are applied, and bottoming out when the car runs over a bump or driveway lip.