Suspension
Suspension coil spring
Supports vehicle weight while allowing wheel movement.
Between suspension arms or struts and the body.
The spring stores energy as the wheel moves; the damper controls the resulting oscillation.
A weight-bearing cushion that compresses over bumps.
Uneven ride height, broken coils or changed handling require inspection.
Wear is condition-based and strongly affected by roads, loads, impacts and seals. There is no universal replacement mileage.
Links and bushings are smaller repairs than complete adaptive struts or air-spring systems; alignment may be needed after work.
BMW spring specification can vary with engine weight, body style and suspension option.
BMW passenger cars and SAVs; spring, damper and axle design depend on chassis and options.
Same system