I used Truss Physics for the tires: http://forum.unity3d.com/threads/released-truss-physics-for-unity3d-soft-body-simulation-plugin.349503/ For more info about Unity Engine visit the official website: https://unity3d.com/ I also used Truss Physics for the Front Leaf Springs, for the Rear Suspension Airbags, for the Rear Leaf Springs and for the Frame so it can twist. Blog http://goo.gl/FU3qKk Other Channel: http://goo.gl/oXJTt & Facebook: http://goo.gl/ZuEft My System Specs: - CPU: Intel Core i7-4790K Processor 4 GHz - Graphics Card: GIGABYTE GeForce GTX 970 OC WindForce 3X - RAM: 12GB RAM