---
title: frictionSlip
framework: scenekit
role: symbol
role_heading: Instance Property
path: scenekit/scnphysicsvehiclewheel/frictionslip
---

# frictionSlip

The traction between the wheel and any surface in contact with it.

## Declaration

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

## Discussion

Discussion The default value of this property is 1.0. Lower values result in better traction, and higher values make the wheel more likely to slip (causing it to spin freely instead of moving the vehicle).