Hello everyone ,
I have found why i got problems when i setup my car (Its becauses of the bones) But im not very good in modelling and i tried to make the bones on my own but it dont worked so if someone can help me making the bones for my car it will be just amazing ! 
Here is the 3D model:
If you help me with this i can give you some stuff in exchange 
The models needs Only 5 bones (Root and 4 bones for the wheels ) so its a small work (i think)
Feel Free to help me and if you want more informations contact me via PM!
Have a good day !