What is the coil spring in a car?
A coil spring (also called Road Spring) is a kind of torsion spring which can store energy and release it later when needed. It can also absorb shock and maintain the force between two contacting surfaces. Together with a shock absorber, coil springs are pre-assembled as one coil over unit before installation.
Can you replace just one coil spring?
Coil Springs. Replace in Pairs. ... However, when just one spring is replaced, an imbalance will most likely be created resulting in an uneven ride.
Changing your coil springs can restore the vehicle's suspension and significantly improve vehicle ride, handling, and safety. It's recommended to replace coil springs in pairs, and also to replace the shocks at the same time.
Symptoms of Worn or Weak Coil Spring: