Wheel collider problem in Unity 5: SOLVED

watch this video : https://www.youtube.com/watch?v=jNySyx2RrP0

                                          I am going to explain that how i first time get this problem in my unity,so one time i am thinking about to make one car physics so i update my unity from unity 4 to unity 5  and i added one car model in unity and i search some video related to car physics and i am following instruction given by video and after video completed i run my project to check car is moving or not,and than i found that my car is not running its flying :(

                                           So i tried many things to solve this problem by my self and finally i solved it, that problem is of rigidbody.

                                           This is Because Unity 5 physics is changed compare to Unity 4.in this video i tried to explain you about the problem that i get when i tried this car physics first time,and i explain what solution i found to solve this problem and make car moving smoothly.

Explanation:

WheelCollider : this is the collider that we have to attach to the wheels so it will help to make stable car or any object on surface and that will help to move objects in circular direction (same as motor torque) ,so wheel collider is used to give circular force to all wheel so car can move forward or backward. 

if you are beginner than you can visit this link to learn more about wheel collider