---
title: suspensionDamping
framework: scenekit
role: symbol
role_heading: Instance Property
path: scenekit/scnphysicsvehiclewheel/suspensiondamping
---

# suspensionDamping

The damping ratio that limits oscillation in the vehicle’s suspension.

## Declaration

```swift
var suspensionDamping: CGFloat { get set }
```

## Discussion

Discussion Damping ratio measures the tendency of the suspension to oscillate after a shock—in other words, for the vehicle to bounce up and down after running over a bump. The default damping ratio of 2.3 causes the wheel to return to its neutral position quickly after a shock. Values lower than 1.0 result in more oscillation.

## See Also

### Simulating Suspension

- [suspensionStiffness](scenekit/scnphysicsvehiclewheel/suspensionstiffness.md)
- [suspensionCompression](scenekit/scnphysicsvehiclewheel/suspensioncompression.md)
- [maximumSuspensionTravel](scenekit/scnphysicsvehiclewheel/maximumsuspensiontravel.md)
- [maximumSuspensionForce](scenekit/scnphysicsvehiclewheel/maximumsuspensionforce.md)
- [suspensionRestLength](scenekit/scnphysicsvehiclewheel/suspensionrestlength.md)