Suspension Spring Buying Guide
Last updated: 24 April 2026
Suspension springs support the vehicle's weight and absorb road impacts. Coil springs are the most common type on modern cars. Broken or sagging springs cause uneven ride height, poor handling, and increased tyre wear. UK road salt accelerates spring corrosion, making breakage common in winter. At CarParts247 we stock suspension springs from Sachs, Lesjöfors, and Kilen.
Spring breakage and sagging
Springs weaken over time from fatigue and corrosion. Breakage often occurs at the bottom coil where road salt and moisture accumulate. Sagging springs reduce ride height and change suspension geometry.
- Clunking or knocking over bumps — broken spring moving in its seat
- Vehicle sits lower on one corner — broken or sagging spring
- Uneven tyre wear — altered suspension geometry from ride height change
- Visible gap between coils or a broken end visible through the wheel arch
- MOT failure for a broken or cracked coil spring
Replacement advice and spring types
Always replace springs in pairs (both sides of the same axle) to maintain balanced handling. Spring compressors are essential safety equipment for removal.
- Replace springs in pairs — a new spring on one side with an old spring on the other causes uneven handling
- Use proper spring compressors — compressed springs store dangerous energy
- Standard springs: OE ride height, designed for the vehicle's weight range
- Lowering springs: reduced ride height, firmer ride, may affect suspension geometry
- Heavy-duty springs: for vehicles regularly carrying heavy loads or towing
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Coil spring breakage, sagging ride height, and corrosion — replacement advice and spring types.
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Frequently Asked Questions
Why do coil springs break?
Corrosion from road salt is the primary cause in the UK. Fatigue from age and mileage, stone chip damage to the protective coating, and poor-quality replacement springs are also factors.
Should I replace springs in pairs?
Yes. A new spring on one side and a tired spring on the other creates uneven ride height and handling. Always replace both springs on the same axle.
Do I need to replace shock absorbers when changing springs?
Not necessarily, but inspect them. If the shocks are original and high-mileage, replacing them at the same time saves labour costs and ensures matched suspension performance.
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