Symptoms
- Visible crack or gap in a coil spring's coils
- Car sags noticeably on that corner
- Loud bang or clunk over bumps from that area
- Possible rubbing noise from the tire against a broken piece
Likely causes
- CommonCorrosion weakening the spring over timeRoad salt and moisture can corrode spring coils, especially at the ends, until they crack.
- CommonMetal fatigue from age and mileageSprings can develop fatigue cracks after many years of use.
What to do
- Visually inspect all four coil springs for visible cracks, especially near the bottom coil.
- Check for uneven ride height, since a broken spring usually causes noticeable sagging.
- Listen and feel for a rubbing sound from the tire, which can indicate a broken spring piece contacting it.
- Avoid driving further than necessary if a break is confirmed, since a broken spring can puncture a tire.
- Have the spring replaced, generally along with its pair for even handling.
Tools and parts
Coil springSearch: “coil spring for [your car model]”
When to call a pro
Spring replacement requires a spring compressor and is generally safest left to a professional shop.
Safety
Use caution
A broken spring can puncture a tire or cause unpredictable handling; avoid driving on it further than necessary to reach a repair shop.