Symptoms
- Car continues bouncing more than once or twice after a bump
- Nose dives more than usual when braking
- Uneven or cupped tire wear
- Rougher, less controlled ride than before
Likely causes
- CommonShocks or struts worn from age and mileageThese components lose their damping ability gradually over 50,000–100,000 miles depending on driving conditions.
- CommonLeaking shock or strutA visible oily film on the shock body means it's lost hydraulic fluid and damping ability.
What to do
- Perform a bounce test: push down hard on each corner of the car and release; it should settle within one bounce.
- Inspect the shock or strut body for visible oily residue, which indicates a leak.
- Check tires for cupped or uneven wear, which often accompanies worn shocks.
- Have a mechanic physically inspect all four shocks or struts, since a bounce test alone isn't always conclusive.
- Replace shocks or struts in pairs (both fronts or both rears together) for even handling.
Tools and parts
Replacement shocks or strutsSearch: “shocks or struts for [your car model]”
When to call a pro
Struts often require an alignment after replacement since they affect suspension geometry; budget for that alongside the parts and labor.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.