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# suspensionStiffness

The spring coefficient of the suspension between the vehicle and the wheel.

```
var suspensionStiffness: CGFloat { get set }
```

## Discussion

The spring coefficient determines both how quickly the wheel returns to its natural position after a shock (for example, when the vehicle runs over a bump) and how much force from the shock it transmits to the vehicle. The default spring coefficient is `2.0`.

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