Coil Springs: The Snap-and-Thump Failure UK Cars Hate Most

Coil springs do the static and dynamic load-bearing of the suspension. They hold the car at its design ride height; they store and release energy as the wheel moves up and down. They’re also one of the most-cursed UK suspension components, because they snap. Always at the worst moment — pulling out of a parking space, going over a kerb, or pulling onto the motorway in heavy traffic.

Why they snap on UK cars

UK road salt corrodes the bottom coil of the spring over years. The corrosion creates pits in the spring steel. Each pit is a stress concentrator. Eventually, on a hard impact or even a routine compression, a pit propagates into a crack and the spring fractures.

The bottom coil is where the spring rests in its lower seat — water collects there, salt is highest there, and the corrosion accelerates. Inspection shows pitting and surface rust at the bottom of the spring long before fracture, but most owners (and many MOT testers) never look.

Symptoms before fracture

None typically. The first warning is the sound of a metallic crack and the car visibly sitting lower on one corner. Replacement is needed immediately for safety and to avoid uneven tyre wear.

Replace in pairs

Always replace both springs on the same axle. A new spring on one side and an old one on the other produces uneven ride height — the car looks lopsided, and the suspension geometry is asymmetric.

Brand

OE-equivalent springs: Eibach, Lesjöfors, Suplex, Kilen. For modified or lowered applications: Eibach Pro-Kit, H&R, Tein.

Find coil springs for your car on the Coil Springs collection.