When i use the car provided it work fine, but when i use my own mesh the car don’t move. The wheels spin and rotate but the car stand still. I have no idea why, i don’t understand whats the problem with my mesh.
here is the fbx MEGA
The problem you guys are facing is with the rigging of your vehicle model. The issues such as sinking wheels or rotating wheels without any actual movement are caused when the bones’ axes are not aligned properly and each axis faces a different direction. Please do take a look at these 2 answers (link1, link2) and the way pivots’ axes are supposed to be set up. Hopefully, a re-rigging should fix your issues.