I have created a car racing game with the help of unity game engine, i took help from the unity car race game tutorial but i have replaced their car model with my own car model but the game is not working as it should …
above is the link of youtube video showing footage of my game . plzzzzzzzzzz leave your sugestions
thanx in advance! 
I started developing my vehicle script from this tutorial too, and i encountered the same problem with the wheels high up in the air.
Unfortunately i dont remember the solution exactly.
It had something to do with the collisions, and the wheel setup function in the main vehicle script.
Examine the scripts, angles, coordinates, and behaviors of the original car, and solve the problem by either changeing your model you import, or changeing the script.
Use much Debug.Log(importantValue);
thanx a lot vik 
for doing my help now at least i have got an idea the problem is inside the script
i’ll try to resolve it.
you can upload the game here for others to play:
This should be rather interesting as I’m a total freak when it comes to car racing of any kind especially the games will check out the link before I put in a comment regarding how good it is.
Check the pivot points on your wheels in the 3D modeling app you used to build it with. Make sure they are centered on the wheel. Most likely you copied some of the objects from one side to the other which is why both fronts are whack, but the rear not so bad.
@konzon: that looks pretty simple solution i’ll give it a check