Why Do Car Suspension Springs Break?

1. Springs are made thinner to save weight
2. The use of SL-Springs (banana, curved when not fitted)
3. Smaller spring seats to reduce weight
4. Corrosion after a bad winter
5. More speed humps & pot holes

Manufactures are under increased pressure to lower emissions, this has forced them to look for weight saving where possible, but at the same time drivers want more equipment (air conditioning etc.). Suspension is heavy so there are large gains to be made, up to 2kg per strut but the cost is more suspension springs breaking on cars of no age.