Driving with worn shocks or struts can result in more than just a bad ride—there are safety implications to consider. “Most drivers don’t realize that driving with bad shocks or struts can actually increase your stopping distances, especially on wet or slippery roads,” says Jill Trotta, Senior Director at RepairPal.
But recognizing when it’s time to replace shocks or struts isn’t always easy. “You get used to the way the car drives because the changes are gradual,” says Richard Reina, Product Training Director at CARiD. “You’re not aware of the wear and tear that’s going on with the suspension over the thousands of miles and years that you own the vehicle.” It’s like that favorite pair of shoes that feel fine until, one day, you discover the soles are worn out.
How They Work
Shocks and struts help stabilize your vehicle’s movements, enhancing control when you turn, brake, accelerate or encounter uneven road surfaces. Today’s vehicles use shocks, struts or a combination of the two.
The basic difference is that a shock is an independent component, while the strut combines the shock and other features in a single structural unit. Both help to stabilize the vehicle and keep the tires in contact with the pavement. Without shocks, your vehicle would bounce down the road.
How long can you expect your shocks or struts to last? That depends. “Driving on rough or unpaved roads, towing a trailer or carrying heavy loads, can shorten their functional life,” says Reina. “With heavy use, you could be looking to replace them at 40,000 or 50,000 miles or sooner. Under normal conditions, 75,000 to 90,000 miles might be reasonable.”