For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download Kart-Racing Physics for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Kart-Racing Physics
“If possible, please buy the package to support the developer”
Kart Racing Physics provides an easily tunable arcade-style physics simulation in the vein of classic racing games.
Try out the Web Demo to see how it plays.
Features:
* Fully Updated for Unity 5
* Simple to setup – simply swap in your own models and be ready to race in no time
* Easy to tweak – no complex torque curves or tire friction values, just adjust parameters like top speed, acceleration, traction etc to create just the feel you want
* Built-in support for arcade-style powerups – easily give the vehicle a speed boost, make it spin around and slow down, and several other simple to use effects
* Fully documented C# code – clear, readable and easy to modify
* Fully working example scene with race-track and powerups
